Sorry for sounding really blonde - but this is like a whole new language for me... what is OBL's? I have heaps of backlinks, but I am not sure which ones are good or not - and since it's a referral system, I can't really guide people about the best place to put their links
use this: PR(A) = (1-d) + d(PR(t1)/C(t1) + ... + PR(tn)/C(tn)) where PR(t1) is the page rating of the first website that link to you, PR(t2) the second... etc, C(t1) is the number of the links on that page, and d is 0.85 .
Right, That's why it is called prediction @OP: You can check this googlelady.com/date/2005/11/22/page/2/ if you want to apply a mathematical formula to predict your PR
try to this link and help google to index your site... http://www.google.com/intl/en/submit_content.html
it wont show a prediction if you dont have a page rank yet must have a page rank of atleast 1 i tried with my new sites and no show but my older sites show
if you want to increase your PR then improve your link popularity...submit your site to link directories...create articles and submit them to article directories...forums, blogs...social bookmarkings(also for traffic)...try link bait...
More or less it means that : your content is so interesting that people naturaly make a link to your site.
It depends. Are you a specialist about something ? If yes, you can interest some people who will follow your articles.