I'll prolly post here every now & again...
1)
http://www.able2know.com/forums/faq.php#1 says: "Why do I need to register at all? You may not have to, some forums on this site do not require you to register to post messages. However registration will give you access to additional features not available to guest users such as definable avatar images, private messaging, emailing of fellow users, usergroup subscription, etc. It only takes a few moments to register and it's free so give it a try."
I may be wrong 'bout this, but I'm under the impression that guest users are no longer capable of posting anywhere. I's too lazy right now to try it out fer meself, though. At any rate, "emailing of fellow users" is, I believe, not capable even for user who are logged in. Maybe I's a bit mixed up though.
2) In the portal if you do a directory (DMOZ) search it indeed runs the query, but jumps you all the way back up to the top of the page which is a tiny tiny hassle & may make some people think no results were found. Jumping to a named anchor on the page right above the DMOZ search would, IMO, be a bit better effect.
....like i said everything here be utterly trivial. Me's just pointing these things out here on the off chance that I'm the first one to notice them.