The site http://english.seeore.com/ appears to be reposing a lot of EL&U content plastered with ads (5,047 posts at time of writing). I can't see any proper attribution, other than this footer which is probably just scraped and points back to them anyway:
Welcome to http://english.seeore.com/
Something like this happened on a Blogger blog not so long ago; here's the relevant meta post, and here's waiwai933♦'s answer from it:
It's violating the copyright of EL&U users, but neither EL&U nor SE hold copyright of the content.
The problem is doing something about it, since SE doesn't have the power to act on behalf of its users. The copyright owner (i.e. the OP) of each post would have to file a DMCA complaint about his/her posts with Google, but there is no way to combine these complaints or make them simplier in any way (because in theory, people could have relicensed their posts).
So basically, you can file a DMCA complaint with Google if and only if you were the original person to write the post.
See the other answers and comments for more tips.