Question | Blocking IP's? avoiding Spam?
 

Hi,

We are running vBulletin 3.8.1.
We had lots of spam robots the last months, but now it fot relaxed after changing the Captcha.

Questions:
1. Blocking IP - Is there any chance that this feature is not working?
2. Blocking IP for a normal usser - Same, seems like same normal annoyed user registering again.
3. Any tip for avoiding spam?

Thanks :)