All threads related to these RS RWT sites go here:
http://sythe.org/forumdisplay.php?f=506
There are two customer review threads.
Here's the link to the Gold4RS customer review thread:
http://sythe.org/showthread.php?t=837316
Here's the link to the USFine customer review thread:
http://sythe.org/showthread.php?t=642970
Personally, I don't like these sites. Too much risk of getting scammed, and you can't even do anything about it if they do scam. I heard USFine requires a phone call. I only use Sythe for all my RS needs.
Good luck.