Should I worry about other sites "stealing" SE content?

Question

Googling a phrase from Which font is the most comfortable for on-screen viewing? brings up three other sites featuring the same question:

1. www.faqoverflow.com/tex/20149.html
2. www.zqna.net/qna/ihnmrw-which-font-is-the-most-comfortable-for-on-screen-viewing.html
3. www.techques.com/question/31-20149/Which-font-is-the-most-comfortable-for-on-screen-viewing

^{Hyperlinks removed by doncherry so that bots don’t think these links are worth following, cf. meta.so.}

I knew that all SE user content is "licensed" under something called "cc-wiki license", which, as the SE blog explains, requires that the re-user

1. Shows that content is from SE and hyperlinks to the original question,
2. Shows the question/answer/comment posters' names and hyperlinks to their SE profiles.

FAQ Overflow fulfills these requirements, while the other two don't. So what can/should we do?

Answer 1

They can be reported on Meta Stack Overflow - ZQNA was already added by @doncherry:

Report sites that use SE content without following attribution rules here