I am looking for a tool that can visit websites specified by me and just email me any changes/news published on that site. This is a simplified version of web crawler I guess. After all the movements in Iran has been cracked down the government escalated the filtering of most of news sites so people in Iran are totally in the dark. This tool has to be run online (not from desktop, because of the filtering) and should work as a subscribing service for anybody who wants the news emailed to them. Any ideas? Grateful for any tips and suggestions!