Can I throw a tip out there for from a "savvy veteran"?
I think those GMs who are most successful are the ones who initiate trade offers by sending lots and lots of PMs -- and lots of lots of trade offers -- rather than the ones who say "PM me". The person who makes the first offer is the one who sets the basic parameters for a deal, and I think more often than not, it's the person who makes the initial offer who wins the trade. (Not always, though. Some people just overpay, even in an opening offer.)
If anybody is running into problems with the PM limits, let me know, and I'll lift any restriction your account may have.