...? Are you serious? Jeez! How did you get here? Wasn't it the Q2A footer perhaps? Look into the Directory and decide why so many people use this platform.
Try to edit qa-include/qa-theme-base.php and then find this line
'Powered by <A HREF="http://www.question2answer.org/">Question2Answer</A>',
Change it as you want. But i request to keep it if you are using free version. :)
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.