Ive decided to join in and provide an ongoing analysis of my forum.
So far its been 1 month since i upgraded to vBulletin and vBSEO.
I also started aggressive link building at this time. Lots of PR7s and below and a few PR8s.
My whole site is now indexed in Google all 13k pages.
It was 500 pages before with phpBB.
After the initial period there was a big drop, but the last few days have been very good, 600 today with a good few hours to go.
We are expecting 1k daily referrals from Google by the end of the week.
With phpBB before we were getting maybe 10.
Google referrals are as follows: