Hi, i tried to make this concise. If one has a free membership website maybe a blog where the members actively use it, now on the blog there are a few affiliate links and i know you can tell which members clicked the links but what about the ones that made a purchase? Here's a simple example: You're blog only has 10 members, Johnny1, Johnny2, Johnny3, Johnny4 etc. and at the of the day on Saturday you check your sales from affiliate links only, and you find out there's being 3 purchases from members, is there any way at all of finding out which members made the purchases, they might have all went onto the affiliate links, but there was 3 purchases made, so is there any method of finding out who made these apart from getting copies of their receipts or something ridiculous like that, if they don't do ANYTHING only make the purchase is there any known way, so you can maybe for example thank them for going through your site in an email, or just to plain and simply know? Thanks.