[Jazzepi]

Well, if it works like Edi says then the process is something akin to this, ignoring the selection of the actual site.

1st site : Roll, if you succeed, add a site. If you fail, discontinue.
2nd site : Roll, if you succeed, add a site. If you fail, discontinue.
3rd site : Roll, if you succeed, add a site. If you fail, discontinue.
4th site : Roll, if you succeed, add a site. Discontinue.

So to get a number of sites past 1 you have to succeed multiple times in a row. I think that makes every site past the first less and less likely to be there. But I could be very, very wrong.

Jazzepi