Fandom is what a comic con is all about!!

The first thing I do a comic convention is walk through artist alley.  I don't stop, I just take note of who is there, and where I want to stop later.  I also note who does commissions, their prices, and if I want to take a closer look at that.  (My suggestion to all artists taking commissions: Make that sign BIG and prominent.  Examples are great.)

Fan art is most welcome -- it'll probably catch my eye and make me look at things.  Humor is great too, or characters in interesting groupings.

But then I'm also looking for who has their own book/GN for sale, and I tend to be very liberal at a convention on what I buy. If I remotely think I'll like the book, I'll buy it.  (I'm a bit more discriminating at my local comic store, but I still grade easier on independent comics, as I want to encourage those.)