Midstock (or perhaps 'user contributed' macrostock) agency photoshelter have announced that they will close their PSC (photoshelter collection) on 10 October this year.
Photoshelter had some very Impressive marketing, they appeared out of nowhere about 12 months back, spinning lots of buzz out of their 'shoot the day' and "we won't accept images also for sale on microstock sites". Quite an impressive achievement to build a professional looking stock collection out of a site that was just a way to archive your photos a year back. Many photographers took the bait and uploaded their work for the promise of 70% commission on sales for $50 plus (prices varied by usage).