by jimbobo2779 » Tue Sep 03, 2013 10:26 pm
If you want to block a tld you can do this easily with the Domain Block list in the "Settings=>Add and Block Lists" tab, just add .net to it if you want to block all links from .net domains.
If you don't mind me asking, why would you want to block a whole tld? I don't see that any tld really has any major benefit over the others such that you would want to block an entire tld.