Yea, that was a great article. Had some very good info that I have shared with others. I like how you laid out the different pieces of art to collect and how to get them.
The only thing I would add is about how to get pieces of art when not at a con. I you mentioned about commissioning art and getting involved in a community where others share the same hobby. I would also mention ebay as being a great place to buy. As well as Comic Art Fans and one of a dozen good dealer site's.
