A few things i'd like to ask before I go about purchasing this stuff.

Is the 'visual' side of this script customizable?
I mean, can I change the text that appears on every post and the color of the linkbot's message?

Can I set how many threads/posts it should check on each run (following rapidshare's spam policy stuff)

$50 with support. What sort of support would that be? And for how long?
And, if I get the $30 version, I'd be totally on my own? Or would I get some basic instructions on installing and modifying this stuff.

How easy is it to modify? Can/will it be done through the admin interface or does it require php skills?

Quite a few questions there, but I prefer to set my stuff straight before investing my money