Every once in awhile, the #MSWL hashtag gets fired up and a bunch of editors and agents of all stripes put out their wishlists. These are the books they are looking for. Trying to find where to pitch your teenage arachnids in love YA? Guaranteed somebody on this list wants it.
Even if you aren't looking to query, it's an incredible trove of story ideas. Plus, it's an interesting look at what is marketable today in all genres. At the end of the event, all responses will be Storified on the MSWL Tumblr.
Reminder: You still need to follow all documented submission guidelines and, as always, it is bad form to pitch on Twitter.