| Similarity | Rank | |
|---|---|---|
| in_Second_Life | 0.789 | 68921 |
| virtual_world | 0.759 | 17622 |
| World_of_Warcraft | 0.584 | 42810 |
| virtual_space | 0.583 | 66084 |
| virtual_reality | 0.574 | 20882 |
| online_community | 0.574 | 21417 |
| MMORPG | 0.565 | 95310 |
| virtual_environment | 0.564 | 40172 |
| Web_[number] | 0.558 | 19194 |
| Moodle | 0.557 | 23507 |
| WoW | 0.555 | 55115 |
| Oculus_Rift | 0.551 | 80561 |
| virtual_community | 0.549 | 85198 |
| serious_game | 0.528 | 68001 |
| online_world | 0.527 | 55280 |
| MySpace | 0.525 | 30661 |
| Virtual | 0.523 | 22082 |
| Minecraft | 0.521 | 18898 |
| avatar | 0.520 | 14431 |
| MOOCs | 0.512 | 34845 |
| social_networking | 0.512 | 13988 |
| eLearning | 0.511 | 38351 |
| videogame | 0.511 | 30807 |
| Prezi | 0.509 | 89318 |
| SL | 0.507 | 14284 |