I've installed ADBlock and I'm not turning back. I now see that Categories doesn't allow the blocking. Is there another app similar to Categories? I'm not going to comment out anything (in the hosts file) to get apps to work. I'm trying to think of a way to write a script to rename the hosts file then open the Categories app, renaming when exiting... I'd pay for an ad free Categories. If no solution, Categories is a goner... Or I'll simply wait until I FTP to the phone, rename the original and the blocking hosts file, use Categories, then rename and close. I'm simply not going to permanently disable any blocking.