I love it when an image sells for the first time within a few days of initial upload. I've had a few of those lately, and it always makes me feel like I know something about shooting for stock - but then I look at the other 19 from the same day :)
© Photographer: Bradcalkins
Yes - brick has been done before, but I've noticed that the Pansonic GF1's 12 MP files seem to get more attention. Not sure if it is coincidence or not, but if you are looking for a background texture I don't know why you wouldn't want the most pixels...
Not sure if anyone else is seeing this, but lately my sales seem to be on a real roll. I had an EL sale today, and yesterday managed to bring in 23 sales!