| Tag | Number of Entries |
| Aliens | 49 |
| Anime | 3 |
| Apocalyptic | 3 |
| Communications | 27 |
| Demonyms | 64 |
| Dimensions | 24 |
| Doctor Who | 9 |
| Drugs | 5 |
| Dystopia | 9 |
| FTL | 50 |
| Gaming | 3 |
| Genre | 61 |
| Language | 29 |
| Paranormal | 30 |
| Propulsion | 28 |
| Robotics | 35 |
| SF Criticism | 207 |
| SF Fandom | 114 |
| Star Trek | 31 |
| Star Wars | 10 |
| Time Travel | 50 |
| Vehicles | 71 |
| Weaponry | 46 |