Reasons
 

I was thinking, when you upgrade your account, you can select a reason why you upgraded(optional).

Like you can choose, playerworld, and which playerworld.
Or choose forums, or choose nothing.

Maybe this way Stefan can find out why some people are upgrading and maybe give benefits?

Great idea. It'd also help establish which servers are the most popular, though I think we already know which those are. ;) By the way, did you mean separate questions, or providing a box for the upgrader to state their reason?

A drop menu with pre-selected reasons, so It can be polled.

Ah, alright. So for example:

1) Did you upgrade your account due to a specific playerworld online? If so please state the playerworld name below.
Drop down menu.

2) When upgrading your account, did having access to the forums help make your decision?
Drop down menu. (Yes, No, Didn't Care.)

I believe they have something like this for servers already... or planned, where you visited the website with an id tag to signify what server had you follow the link (?).

Something like that.