[ooc] reference post - writing tables/community tags

Tables:

- 10_letters
- Fanfic 50

Tags for writing communities:

- Links for au_muses.
- Links for hpsixwords.
- Links for grownhp6words.
- Links for hp_beyond.
- Links for justprompts.
- Links for makeyourlist.
- Links for random_fic.
- Links for the_bigshow.
- Links for writers_muses.

Other:

- Reference posts.