YA Answer Syndication?

I have a web site and Google it two or three times a year to check its ranking data. My YA nic is also my domain name. I was quite shocked to see at least 30 other sites syndicating YA's answers, I mean copy-and-paste, verbatim syndication of both the question as well as every answer given. Is it known how many other web sites syndicate the answers from YA as their content?