I have seen spiderweb marketing all over youtube. It's a pretty good idea really since they advertise it in the videos as a free system but in reality to make any money with GDI and the other companies you do have to sign up and at least pay for GDI.
I would suggest making a few quick camtasia videos of your backoffice, possibly show some earnings you've made with the system, and reupload that video to all the sharing sites using tubemogal (sp?) and then continue to make videos, upload more vids with different keywords and over time they're going to gain views as the vids get associated with more vids that people are watching (based on your keywords).
Hope this helps.