For some reason, the size in my signature can only go up to 4. Any more and it'll tell me "BB code size value is too big."

That's to limit the size of words in your sig so that it doesn't get to big. Not an error at all. We don't want big spammy words everywhere.

We should have more members try putting size 7 text in their sig and see if there's a pattern as to who can and cannot do it. I can do it, but I'm a global mod.

I tried changing font size to "7". It didn't work; got the same error.

I couldn't use size 7, so I had to improvise to actually get to the size of the text in Jared's sig.