At present, I haven't written anything. This is mainly because I'm a perfectionist and my plots aren't up to my standards yet. However, my favourites lists are useful if you're the type of person who likes to avoid junk fics by following peoples' favourites lists.
I'd especially like to recommend "The Open Door" by Academia Nut, Culture Shock by Ruskbyte, and anything by Ozzallos, Innortal, and nonjon. Those fics and authors seem to be able to brighten even the dullest days. C. Jones, Calamity-Queen of Cordite, Cloud-Dreamer, and Kenko are also great, but they don't really release anything anymore.
I write fanfiction reviews which are available on the otaku stuff section of my blog (blog dot ssokolow dot com) and micro-reviews (ratings with summaries) via a #fic_rating hashtag on Identi.ca (@ssokolow) and Twitter (@deitarion). (I cross-post, so follow me on whichever you prefer, but Twitter's history retention is terrible so it's really only good for subscribing.) You may also like the quote randomizer (ficfan dot org) I'm using as a placeholder for one of my programming projects and my collection of fanfic ideas (ssokolow dot com slash story_ideas dot html).
I also write userscripts to improve the FFnet experience with things like more advanced result filtering (greasyfork dot org slash scripts slash 13486) and customizing the default settings for the filters that FFnet does provide (greasyfork dot org slash scripts slash 14261).
Finally, I run an index of gender-bending fiction (gbindex dot ssokolow dot com) which has a fanfiction section (Media > Fanfiction) but I haven't yet had time to implement full-featured filtering so, if you want fanfiction by source series, look up the character you're interested in and then get a list of matching fanfics that way.