Keyword Notification

[lem]

Hello,

In summary, I need a hack that will notify certain people by email if a keyword was used. This would be for a site that has manufacturers on it. The manufacturers want to know when their products are being talked about. So, in a system like this I think that I would setup a manufacturer or person and the keywords in the threads that they would like notification of. This way a manufacturer can visit the thread and if need be, correct the misinformation on the product that is being talked about.

I posted here, and not in the paid area because it does not look like anyone replies in the paid area. Is there something like this already? Or, is there anyone that I could pay to do something like this? Is a project like this safe to post in eLance?

Thanks,

Andy