I'm one of the thousand who run an RSS service (feeder.co), and we're still growing! From speaking with our users, it's evident that the uses for RSS and simila

I'm one of the thousand who run an RSS service (feeder.co), and we're still growing! From speaking with our users, it's evident that the uses for RSS and similar open standards are endless. It can make you feel really small at times when the product you are creating is standing on the shoulder of not-so-benevolent giants. For example, Craigslist apparently hates when somebody actually uses their feeds. They IP ban anyone doing a pretty regular amount of requests per hour, and are completely impossible to get ahold of. (have you seen their forum?) When our spiders are blocked by Craigslist, our users suffer. And then they come to us asking why feeder doesn't work...