The blog is self-referential, in that it contains a number of references to stuff that nerd people are claimed to like. At the bottom of each entry in bold is "N Nerds Like This", which indicates how many references are contained within that entry. A word that refers to multiple categories counts multiple times
#1 SONGS ABOUT MATH OR SCIENCE: The Galaxy Song (x2), (set, disjoint, intersection), bridges, One would think...
#2 LINUX: Firefly (x3), one can make...
#3 SENTENCES THAT USE MATHEMATICAL VOCABULARY IN A NON-MATHEMATICAL CONTEXT: Color-Country game, dollhouse (x3), 7, (proper subset)
#4 LOGIC PUZZLES: Mornington Crescent, ultimate frisbee
#5 PRIME NUMBERS: Angel, Buffy, Pathfinder
#6 SHOWS BY AARON SORKIN: post hoc ergo propter hoc, use of modus ponens
#7 PHRASES IN LATIN: Quid agis, use of modus ponens, oblivion, two
#8 SCIENCE FICTION TELEVISION: Race for the Galaxy, Fawlty Towers, WoW, fences
#9 ER JOKES
#10 PROGRAMMING LANGUAGES THAT USE PARENTHESES
#11 MODUS PONENS: modus ponens, scheme
#12 SPORTS THAT ESPN RARELY SHOWS: Monty Python swallow sketch, ...if one walks into...
#13 BOARD GAME GEEK'S TOP 35 GAMES: 41, three
#14 BRITISH HUMOUR: fedora
#15 ANYTHING BY JOSS WHEDON: persona non grata, Studio 60 on the Sunset Strip (x2)
#16 WEBCOMICS: Red Dwarf (x2)
#17 TRIVIAL GAMES: Puerto Rico, thirteen
#18 STUFF USED FOR BREADBORDING: Lisp, Power Grid, Star Trek: Deep Space Nine, penny arcade, use of modus ponens
#19 SHOWS CANCELLED BEFORE THEIR TIME: Babylon 5, 5, zener diode (x2)
#20 USING ONE AS A PRONOUN: curling, Nurikabe
#21 RPGs: red hat, 37, (polyhedra), dork tower, ...some time in one's life...
If for each Stuff you count the number of references to it and index into the name, you get:
1. S (1) SONGS ABOUT MATH OR SCIENCE (The Universe Song)
2. I (2) LINUX (fedora, red hat)
3. N (3) SENTENCES THAT USE MATHEMATICAL VOCABULARY (in SENTENCES THAT USE MATHEMATICAL VOCABULARY, SONGS ABOUT MATH OR SCIENCE, RPGS)
4. G (3) LOGIC PUZZLES (bridges, Nurikabe, fences)
5. U (7) PRIME NUMBERS (5, 7, thirteen, 37, 41, two, three)
6. S (1) SHOWS BY AARON SORKIN (Studio 60 on the Sunset Strip)
7. A (4) PHRASES IN LATIN (post hoc ergo propter hoc, modus ponens, quid agis, persona non grata)
8. N (5) SCIENCE FICTION TELEVISION (Dollhouse, Babylon 5, Star Trek: Deep Space Nine, Firefly, Red Dwarf)
9. E (1) ER JOKES (zener diode)
10. R (2) PROGRAMMING LANGUAGES THAT USE PARENTHESES (LISP, scheme)
11. D (3) MODUS PONENS (in SHOWS BY AARON SORKIN, PHRASES IN LATIN, STUFF USED FOR BREADBORDING)
12. P (2) SPORTS THAT ESPN RARELY SHOWS (curling, ultimate frisbee)
13. A (3) BOARD GAME GEEK'S TOP 35 GAMES (Puerto Rico, Race for the Galaxy, Power Grid)
14. T (4) BRITISH HUMOUR (The Universe Song, Monty Python swallow sketch, Red Dwarf, Fawlty Towers)
15. T (4) ANYTHING BY JOSS WHEDON (Dollhouse, Firefly, Angel, Buffy)
16. E (2) WEBCOMICS (dork tower, Penny Arcade)
17. R (2) TRIVIAL GAMES (color-country game, Mornington Crescent)
18. S (1) STUFF USED FOR BREADBOARDING (zener diode)
19. O (3) SHOWS CANCELLED BEFORE THEIR TIME (Dollhouse, Studio 60 on the Sunset Strip, Firefly)
20. N (4, 7, 15) USING ONE AS A PRONOUN (in SONGS ABOUT MATH OR SCIENCE, LINUX, SPORTS THAT ESPN RARELY SHOWS, RPGs)
21. G (3) RPGs (Oblivion, Pathfinder, WoW)
At which point you contact us and come to HQ to SING US A NERD PATTER SONG. When you do so, you get the answer, which is FIERY SERPENT.