I have. Most notably I have a SERIES of sequels in the demented'verse... and I have them all because once I blended the universes, it became "How would the HP crew react to *thing*"... which is what all the sequels have been since Vile Violent Vacations. And Vile Violent Vacations was written to satisfy the "now that HP has seen the SPN world, how would Sam and Dean react to seeing Hogwarts?"
Other sequels are my Unfortunate Brother 'verse. Where I wrote one quick fun fic, and then spend forever pondering what Merlin Holmes' childhood would have been like...so then had to write a follow-up where I sort of took a trip through various stages of his life.
Sometimes I write them just to have more fun - like with the Trifecta'verse.
Sometimes I don't write sequels... I haven't written one for Men of Legend, for instance, despite many people wanting me to. And maybe I will one day - but right now I just sort of feel like I *like* the end of it. I like the fact that you don't know what's going to happen next for Merlin - is the story going to play out the same, or is Merlin going to change everything based on Sam and Dean's advice? I like the fact that it's sort of a choose-your-own-ending as it is now. If I wrote a sequel, I'd have to commit to the way *I* see them continuing, and well, it's SLIGHTLY more depressing than I think a lot of the fans of that fic would be happy with.
My other Merlin fic "I Imagine the Gods..." - I actually kinda want to write a sequel to this. Or, at least, there's a scene I want to write... but, yeah, I haven't done it yet, mainly because I really just want to write that one scene, but again, the fic as it stands now kind of ends in a really good place.
Ending in a good place makes it hard to write sequels... for the record, I sometimes wish that I had ended the demented'verse after Seers, Souls, and Scandinaevians, because I thought that ending was really good.
All my other fics are relatively short and very much one-shots. So, they don't really warrant a sequel, given that they don't really have plots to begin with.
22 – Have you ever participated in a fest or a Big Bang? If so, write about your favorite experience in relation to one. If not, are there any you've thought about doing? And if not, why not?
No, mainly, because I have a profound fear of commitment. Also, I very very rarely get ideas... so, yeah. When I do get an idea, I just write it, no need for an event. And I guess I don't really want to be writing someone else's idea if I'm not that interested in it and I could be better using that time to work on my own ideas.
I have TOYED with the idea fo doing a fest where you receive prompts from someone else, but I really just think that none of the prompts would appeal to me and I'd be stuck writing something that I didn't like.
Usually, I post to livejournal and AO3. I'm thinking that in the future though, I'll just post to AO3. No one comments on LJ anymore, because AO3 has a different commenting culture (that makes comments more rare) and I think it's leeched over and most of the dialogue in fandom has moved to tumblr or twitter or other pleases that I don't even know about. It's not that I only post for the comments, but if I can't even tell if people are reading the fic on LJ or of they're just clicking over to AO3, then why go through the trouble of posting fic to LJ at all? I might as well just leave fic on AO3 and only use LJ for discussiony type things and non-fic related stuff.