I have checked them out, but it looks and feels very inferior to Flippa. I have not completed any transactions over there, though.
yes I've used websitebroker.com before and their services are very inferior to flippa and they also don't use escrow.com so you can potentially lose a lot of money if you don't have the right protection in place when making a purchase - as I did. websitebroker.com will not protect you in any way if the seller is not legitimate - so buyer beware.