Nobody ever gives me any feedback about TightURL except when they’re having trouble getting it to run. So in order to get useful information about how well it works, I run a public copy at http://tighturl.com and that’s how I learn everything I know about how TightURL performs out in the world. One of the reasons I started a devblog (development blog) was to try and get some more input from my [code] users.
In that vein, how’s your abuse? Mine’s been showing the first serious signs of bot abuse since summer of 2010. I’m also finding that Kaspersky Internet Security flags a lot of the abusive URLs. So the next enhancement to the TightURL anti-abuse system will probably be to add additional data sources to the URL checking routines.