1. Go to the post you think it's against the forum rules (abusive or something like that)
2. Next to the quote button there is this one: Click it!
3. From "Reason for editing" choose the reason you are reporting the post. Misc means other.
4. Than you report in open text why you are reporting. Click Save

When I turn my PC on, I will see an e-mail pop-up with your report. This means that it will be done As Soon As Possible. ;)

Don't be shamed to report.