Rejected answers with no explanation

Well I have answered to some TechRepublic Members that in my humble opinion are cheating.
After they have got an idea that will do the work for them they just reject all the answers that have been submitted to their questions.

I have a suggestion for some kind of feed-back to TechRepublic for that kind of users.

And we, the tech-pros, have NO PROTECTION of such kind of FREE RIDERS
We can do nothing. We can just tell them by email, that we will never answer a question of them again.

Have some to say?
Regards,
Zlatin Zlatev, MCP
Software Engineer & Mentor Programmer,
JEI-Bulgaria