Affiliate Marketing Secrets

I found this website while on google,http://www.jiangbeicn.com
and they posted a question of MINE on their site AND all the answers I got. No one got credit, Yahoo, me, or any of the people that answered!
The question here:http://www.jiangbeicn.com/20101001/havin…
MY ORIGINAL QUESTION THAT I ASKED ON Y!A:http://answers.yahoo.com/question/index;…
Who are these people and how do I report them? There’s got to be something illegal going on here. I’m 99% sure all those other questions they posted are from Y!A as well. This is plagiarism right? And I know for a fact that they aren’t any affiliate of Yahoo either….