Clearly the product works to scrape the YellowPages, but it's the YellowPages, so a lot of entries are obsolete. This same company has an email verifier program, which you clearly need to do.
What I don't like is, they have a button on the results page that says: Verify Emails, but it doesn't actually do anything. It just takes you to their other software purchase page. Misleading.
It should be, or at least offer to be, integrated. If you just use the emails in the results as they are, you will get a large number of bounces. That's not Reoon's fault. That's from the source. But this could be made a lot more useful to the end user by cleaning up the results.
Otherwise, it works as advertised.