Interesting little thread you have started.

And hopefully it'll help. Though I normally try to be nice to the newbies, even if they do send something a bit annoying. (And I have a feeling some of them haunt the Trade Rant forums just to send those annoying posts to you....just a theory...)
But, I honestly want to disagree with one thing, respectfully of course.
Rarity Help For Newbies1. Most butterwolves or warrior cats aren't worth anything. Exeptions are the URs, and the christmas butterwolves/warrior cats.
There are some butterfly wolves that -are- worth a bit more. The dark pink shima butterfly wolf from June was a rarity, and people sought after it for months after. And, if you try to trade for it, it's still worth more than your average butterfly wolf. That, and the green august butterfly wolf was another rarity. Granted, it's still considered 'uncommon' just because it's labeled a butterfly wolf *sighs* But it was a rarer outcome.
Also, the newer warrior cats are not 'not worth anything' as you can only adopt 2. Granted, everyone gets an extra, but they're not nearly as common as when you could adopt 15. They're worth a bit in trade to a hoarder for example.
Just thought I'd put my two cents in. Hope you don't mind? I just hate seeing it when one catergory is glazed over as 'worthless' when truly, it's not. Not to mention, a lot of work goes into these just to be labeled as so. I'm sure the artists who create them don't like seeing that, but, maybe it's just me.
Either way, nice job putting some info out there. Good luck to you!
~Roya
EDITED TO ADD:
You might point them to this guide to help out....
Rarity guide for 2009Not to mention point them to just about any guide before making a trade offer, lol, learn your pets! There's plenty of info out there. XD