| Code | Groups | Description | Member | Last 30days post | Post Ratio |
| 106 | fin, tech | Venture Capital & Private Equity | 2,000 | 148 | 7% |
| 104 | corp | Staffing and Recruiting | 21,000 | 1500 | 7% |
| 113 | med | Online Media | 3,000 | 189 | 6% |
| 144 | gov, man, org | Renewables & Environment | 3,000 | 181 | 6% |
| 118 | tech | Computer & Network Security | 6,500 | 375 | 6% |
| 52 | gov, man | Aviation & Aerospace | 4,000 | 223 | 6% |
| 4 | tech | Computer Software | 45,000 | 2500 | 6% |
| 137 | corp | Human Resources | 11,000 | 589 | 5% |
| 74 | gov | International Affairs | 3,500 | 160 | 5% |
| 96 | tech | Information Technology and Services | 180,000 | 8000 | 4% |
| 5 | tech | Computer Networking | 5,500 | 228 | 4% |
| 11 | corp | Management Consulting | 50,000 | 2000 | 4% |
| 31 | rec, serv, tran | Hospitality | 12,000 | 472 | 4% |
| 97 | corp | Market Research | 3,000 | 113 | 4% |
| 6 | tech | Internet | 40,000 | 1500 | 4% |
| 43 | fin | Financial Services | 27,000 | 1000 | 4% |
| 98 | corp | Public Relations and Communications | 5,500 | 203 | 4% |
| 139 | hlth | Mental Health Care | 3,000 | 108 | 4% |
| 114 | gov, man, tech | Nanotechnology | 1,000 | 35 | 4% |
| 103 | art, med, rec | Writing and Editing | 6,500 | 226 | 3% |
| 9 | leg | Law Practice | 6,000 | 208 | 3% |
| 129 | fin | Capital Markets | 1,500 | 52 | 3% |
| 1 | gov, tech | Defense & Space | 3,000 | 103 | 3% |
| 46 | fin | Investment Management | 4,500 | 149 | 3% |
| 109 | med, rec | Computer Games | 8,000 | 263 | 3% |
| 84 | med, serv | Information Services | 9,500 | 304 | 3% |
| 12 | gov, hlth, tech | Biotechnology | 7,000 | 220 | 3% |
| 148 | gov | Government Relations | 2,500 | 78 | 3% |
| 143 | good | Luxury Goods & Jewelry | 4,000 | 124 | 3% |
| 124 | hlth, rec | Health, Wellness and Fitness | 7,000 | 216 | 3% |
| 126 | med, rec | Media Production | 8,000 | 246 | 3% |
| 57 | man | Oil & Energy | 7,500 | 228 | 3% |
| 10 | leg | Legal Services | 3,500 | 105 | 3% |
| 79 | gov | Public Policy | 2,000 | 60 | 3% |
| 21 | good | Tobacco | 1,000 | 30 | 3% |
| 121 | corp, org, serv | Security and Investigations | 2,500 | 74 | 3% |
| 8 | gov, tech | Telecommunications | 15,000 | 439 | 3% |
| 80 | corp, med | Marketing and Advertising | 35,000 | 1000 | 3% |
| 78 | gov | Public Safety | 710 | 20 | 3% |
| 3 | tech | Computer Hardware | 7,000 | 194 | 3% |
| 99 | art, med | Design | 21,000 | 579 | 3% |
| 127 | art, med | Animation | 4,000 | 110 | 3% |
| 28 | med, rec | Entertainment | 19,000 | 518 | 3% |
| 123 | corp | Outsourcing/Offshoring | 4,000 | 108 | 3% |
| 141 | gov, org, tran | International Trade and Development | 12,000 | 320 | 3% |
| 70 | edu, gov | Research | 35,000 | 921 | 3% |
| 25 | good, man | Consumer Goods | 7,000 | 183 | 3% |
| 147 | cons, man | Industrial Automation | 8,500 | 221 | 3% |
| 30 | rec, serv, tran | Leisure, Travel & Tourism | 10,000 | 259 | 3% |
| 33 | rec | Sports | 9,500 | 241 | 3% |
| 140 | art, med | Graphic Design | 7,000 | 177 | 3% |
| 110 | corp, rec, serv | Events Services | 6,000 | 147 | 2% |
| 101 | org | Fund-Raising | 490 | 12 | 2% |
| 35 | art, med, rec | Motion Pictures and Film | 7,500 | 183 | 2% |
| 116 | corp, tran | Logistics and Supply Chain | 7,000 | 170 | 2% |
| 108 | corp, gov, serv | Translation and Localization | 9,500 | 226 | 2% |
| 53 | man | Automotive | 38,000 | 901 | 2% |
| 86 | org, serv | Environmental Services | 5,500 | 130 | 2% |
| 135 | cons, gov, man | Mechanical or Industrial Engineering | 14,000 | 330 | 2% |
| 15 | hlth, tech | Pharmaceuticals | 22,000 | 518 | 2% |
| 115 | art, rec | Music | 13,000 | 302 | 2% |
| 38 | art, med, rec | Fine Art | 5,000 | 116 | 2% |
| 130 | gov, org | Think Tanks | 4,000 | 91 | 2% |
| 100 | org | Non-Profit Organization Management | 11,000 | 250 | 2% |
| 142 | good, man, rec | Wine and Spirits | 2,500 | 56 | 2% |
| 62 | man | Railroad Manufacture | 536 | 12 | 2% |
| 102 | corp, org | Program Development | 5,000 | 111 | 2% |
| 71 | gov | Military | 7,000 | 154 | 2% |
| 39 | art, med, rec | Performing Arts | 1,500 | 33 | 2% |
| 50 | cons | Architecture & Planning | 8,000 | 173 | 2% |
| 76 | gov | Executive Office | 2,500 | 54 | 2% |
| 20 | good, rec | Sporting Goods | 4,000 | 85 | 2% |
| 68 | edu | Higher Education | 37,000 | 776 | 2% |
| 119 | tech | Wireless | 1,500 | 31 | 2% |
| 34 | rec, serv | Food & Beverages | 12,000 | 246 | 2% |
| 128 | cons, corp, fin | Commercial Real Estate | 2,000 | 41 | 2% |
| 42 | fin | Insurance | 12,000 | 243 | 2% |
| 67 | edu | Primary/Secondary Education | 7,000 | 140 | 2% |
| 59 | man | Utilities | 4,000 | 80 | 2% |
| 94 | man, tech, tran | Airlines/Aviation | 8,000 | 158 | 2% |
| 111 | art, med, rec | Arts and Crafts | 13,000 | 254 | 2% |
| 17 | hlth | Medical Devices | 15,000 | 292 | 2% |
| 132 | edu, org | E-Learning | 8,500 | 165 | 2% |
| 136 | art, med, rec | Photography | 8,500 | 162 | 2% |
| 61 | man | Paper & Forest Products | 1,000 | 19 | 2% |
| 90 | org, serv | Civic & Social Organization | 3,500 | 66 | 2% |
| 51 | cons, gov | Civil Engineering | 4,000 | 75 | 2% |
| 18 | good | Cosmetics | 11,000 | 206 | 2% |
| 69 | edu | Education Management | 33,000 | 613 | 2% |
| 75 | gov | Government Administration | 11,000 | 203 | 2% |
| 91 | org, serv | Consumer Services | 6,000 | 110 | 2% |
| 81 | med, rec | Newspapers | 4,000 | 72 | 2% |
| 146 | good, man | Packaging and Containers | 1,500 | 27 | 2% |
| 27 | good, man | Retail | 24,000 | 428 | 2% |
| 44 | cons, fin, good | Real Estate | 19,000 | 338 | 2% |
| 131 | org | Philanthropy | 1,000 | 17 | 2% |
| 93 | tran | Warehousing | 1,500 | 25 | 2% |
| 55 | man | Machinery | 17,000 | 283 | 2% |
| 7 | tech | Semiconductors | 15,000 | 249 | 2% |
| 88 | org, serv | Individual & Family Services | 6,500 | 106 | 2% |
| 95 | tran | Maritime | 3,500 | 57 | 2% |
| 112 | good, man | Electrical/Electronic Manufacturing | 33,000 | 536 | 2% |
| 54 | man | Chemicals | 21,000 | 341 | 2% |
| 120 | leg, org | Alternative Dispute Resolution | 311 | 5 | 2% |
| 105 | corp | Professional Training & Coaching | 29,000 | 465 | 2% |
| 92 | tran | Transportation/Trucking/Railroad | 6,500 | 104 | 2% |
| 66 | agr | Fishery | 1,000 | 16 | 2% |
| 82 | med, rec | Publishing | 9,500 | 151 | 2% |
| 122 | corp, serv | Facilities Services | 4,500 | 70 | 2% |
| 19 | good | Apparel & Fashion | 15,000 | 232 | 2% |
| 26 | good, man | Furniture | 2,000 | 30 | 2% |
| 107 | gov, org | Political Organization | 1,000 | 15 | 2% |
| 138 | corp, man | Business Supplies and Equipment | 3,500 | 51 | 1% |
| 24 | good, man | Consumer Electronics | 11,000 | 159 | 1% |
| 41 | fin | Banking | 11,000 | 158 | 1% |
| 47 | corp, fin | Accounting | 17,000 | 235 | 1% |
| 40 | rec, serv | Recreational Facilities and Services | 4,500 | 61 | 1% |
| 36 | med, rec | Broadcast Media | 9,000 | 121 | 1% |
| 14 | hlth | Hospital & Health Care | 15,000 | 201 | 1% |
| 125 | hlth | Alternative Medicine | 2,000 | 26 | 1% |
| 58 | man | Shipbuilding | 1,000 | 13 | 1% |
| 23 | good, man, serv | Food Production | 9,000 | 116 | 1% |
| 45 | fin | Investment Banking | 5,500 | 70 | 1% |
| 63 | agr | Farming | 5,000 | 61 | 1% |
| 134 | corp, good, tran | Import and Export | 13,000 | 158 | 1% |
| 73 | gov, leg | Judiciary | 1,500 | 18 | 1% |
| 87 | serv, tran | Package/Freight Delivery | 1,500 | 18 | 1% |
| 29 | rec | Gambling & Casinos | 1,000 | 12 | 1% |
| 85 | med, rec, serv | Libraries | 755 | 9 | 1% |
| 133 | good | Wholesale | 14,000 | 161 | 1% |
| 49 | cons | Building Materials | 4,000 | 44 | 1% |
| 145 | cons, man | Glass, Ceramics & Concrete | 2,000 | 22 | 1% |
| 56 | man | Mining & Metals | 5,000 | 54 | 1% |
| 77 | gov, leg | Law Enforcement | 490 | 5 | 1% |
| 65 | agr | Dairy | 893 | 9 | 1% |
| 83 | med, rec | Printing | 5,500 | 55 | 1% |
| 37 | art, med, rec | Museums and Institutions | 1,000 | 10 | 1% |
| 48 | cons | Construction | 26,000 | 257 | 1% |
| 89 | org, serv | Religious Institutions | 3,500 | 34 | 1% |
| 117 | man | Plastics | 2,500 | 24 | 1% |
| 32 | rec, serv | Restaurants | 15,000 | 132 | 1% |
| 22 | good | Supermarkets | 1,500 | 13 | 1% |
| 72 | gov, leg | Legislative Office | 733 | 6 | 1% |
| 60 | man | Textiles | 3,500 | 28 | 1% |
| 16 | hlth | Veterinary | 1,000 | 8 | 1% |
| 13 | hlth | Medical Practice | 34,000 | 223 | 1% |
| 64 | agr | Ranching | 553 | 3 | 1% |