MWpro - 4:10 am on Jan 16, 2009 (gmt 0)

Send a legal cease-n-desist order if she is really posting slander about your company. Contact those websites that post her info that she's lying. I had a bad customer who started to spam me from his Yahoo! email account. I wrote to Yahoo! and they took care of it.

I think this is your best bet. I would not hesitate one second to file suit against her for defamation. You may think that her comments are not worth the cost of litigation... but if they are appearing all over google when someone searches for a review of your products, then this could cost you some serious business.

However, assuming you live in the United States... jurisdictionally, you will most likely have to sue her in her own state's state court.

[edited by: MWpro at 4:12 am (utc) on Jan. 16, 2009]