Why are bots registering at my site?

Question

I'm getting a lot of registrations from bots but I don't understand the point. Posting is open for everyone and so far they didn't post anything, be it spam or weird stuff.

Any guess? I'm wondering if the purpose is to play a massive attack or something.

Answer 1

http://www.question2answer.org/qa/36897/how-to-stop-spam-user-registrations?show=36897#q36897

Answer 2

You could try this new plugin created by me . This might help you to prevent spam . 

This puts some random , logical questions to the user . More information is on this thread . 

http://www.question2answer.org/qa/37749/

 
Hope It helps .

Thanks