The App Catalog is a small pond when compared to the likes of Apple’s App Store and the Android Market, and Palm’s sales have been less-than-stellar as of late, but that hasn’t kept one webOS development house from making some serious cash . The Wall Street Journal (subscription required) recently had a write up on Selfaware Games, the company behind Word Ace and Card Ace: BlackJack, writing that they’ve been seeing tens of thousands of unique registrations every day (the vast majority coming from Palm devices), and is bringing in over $50,000 a month in revenue. Those aren’t bad results, considering there’s fewer than 2,000 official applications in the Catalog and that there have been only 30 million total downloads.