As we all know, S.T.A.L.K.E.R. 2 has been recently announced by GSC Game World on their main website. In the subsequent months, members of the YaStalker website enjoyed a contest related to the newest entry in the series - in which they were asked to create a quest that might be used in the final game - and can now submit their ideas for S.T.A.L.K.E.R. 2., both in the blog provided and in a special forum section on GSC-Fan.com.
However, all of those are reserved for those fluent in Russian. Speakers of other languages can joing the Facebook contest, in which the prize is a S.T.A.L.K.E.R. 2 character named after them.