| Tag | Number of Entries |
| Aliens | 45 |
| Anime | 1 |
| Apocalyptic | 3 |
| Communications | 23 |
| Demonyms | 44 |
| Dimensions | 24 |
| Doctor Who | 9 |
| Drugs | 5 |
| Dystopia | 9 |
| FTL | 49 |
| Genre | 56 |
| Language | 16 |
| Paranormal | 30 |
| Propulsion | 28 |
| Robotics | 34 |
| SF Criticism | 198 |
| SF Fandom | 105 |
| Star Trek | 29 |
| Star Wars | 10 |
| Time Travel | 48 |
| Vehicles | 66 |
| Weaponry | 43 |