If there's one thing that I really wish Weasyl had with regards to how their tagging system works, is that I wish tags could infer one other like on the site e621.net.
What do I mean?
Go search "Griffon," "Griffin," or "Gryphon." Each word returns a different result because due to the different ways gryphon can be spelled (all of them are correct by the way), one has to tag an image with a gryphon with all 3 tags. If they could infer each other regardless of which way you typed out the word, it would return the same hits (since it would lump them all together).
...Honestly I just wish this site had tags as awesome as e621.net. If nothing else, that site is amazing for being able to quickly find what you want, as well as blacklisting what you don't want (yay for blacklisting all MLP stuff! :D).
Link
Irbis
Oh, that's very clever. I bet they'd implement it if you brought it up in the forum and it's not too difficult!