We have receive glowing reviews of our products via email. It's great to receive them, but we already know our products are top notch. How do we get our customers to post their reviews in relevant discussion forums?
First, congrats on being awesome and getting great feedback!
When I receive great reviews by email - I profusely thank them for the feedback, let them know how much it means to me, and then I often ask the client if they'd be willing to post that publicly and offer a few site links as suggestions. Generally they are more than happy to do that. This may sound simplistic - and it is - but it has also proven quite effective.
I'd be happy to provide some examples - just send me a message.