Auto email someone a link to a forum post if keyword is in post?

[barros001]

Im also interested in something similar. Im looking for a system where users can create some "alerts", based on keywords. Like, they type in a keyword (or keywords) and select a forum. Everytime a new thread is posted in that forum and contains the keywords, it will email that user. Also, if possible, that user can specify a minimum rate, and when to send, like daily or immediately. Anyone knows something similar to this?? Dont need to be exactly like this, I can modify it to fit my requirements later, just looking for an starting point.

Thanks

Carlos