The questionable practice of requiring artists to front money in order to exhibit is not limited to physical galleries. The online world is full of sites that will gladly display photos of your art for a fee. The allure is understandable, and you are certainly not alone if you are compelled to buy in. These sites know how to prey on the need for exposure that all emerging artists feel so strongly. And in this age of internet fame it is easy to believe that a digital gallery could be the answer to your exposure problems. But just like their…