What is their real migration history? Are they Scythians?
http://www.reddit.com/r/AskHistorians/comments/28dgwo/what_are_the_origins_of_the_slavs_how_did_they/
http://www.reddit.com/r/AskHistorians/comments/2tuq38/where_was_the_homeland_of_early_slavic_people_and/