I didn't get an mda there, but I baught my last phones from there, some nokia 3360s. They got one of my rebates to me right away, the other took about a year to get worked out. They kept thinking I was an existing customer because I ported my # from another wireless company.
Search these forums for "letstalk rebates," I remember this being brought up recently.
I purchased my SK1 from letstalk a few years back with a 150.00 rebate, and got the check in good time. It required that I send in my second month's bill showing that I had paid the first month's. Double check the requirements of your rebates and make sure you will be able to send in such things before the deadline of the rebate.