It's common to post full pdf of one's own publications (have done it myself during my grad school days). Most of these are copyrighted by the corresponding organization (like ACM/IEEE etc) where the publication had appeared/about to appear. This is common practice and usually considered "ok" if you authored/co-authored the paper. Does this violate sopa (since it's technically copyrighted material and you need to pay IEEE/ACM to access it)? Can university sites be shut down?
