Yea, we definitely have. I think we spent between $800-900 (modest budget, I know) on ads in 2009. That includes advertising on various iPhone blogs as well as taking part in reddit's ad program beta. None of it helped. Sales stayed the same or went down.<p>Review articles on Macworld and TUAW helped boost sales temporarily (2-3 days) but the only sustained sales were a result of having our best seller, BillMinder, featured by Apple in "What's Hot." It was great (and appreciated!) but definitely not on the level as the awesome taptaptap or tapbots. :)