The last backlink and PR update has been horrible for this site. Googles API shows 2 backlinks to my main page, and 23 to my forum. PR took a drop, and indexed pages were cut by more than 50%.

Traffic took a dive for me back in early April, then once I seen the results of google's latest update, I knew why.

My theory - Google once again didn't complete an update and my site was severely affected as a result. I have heard of this happening to other sites during this and other updates, and it has also happened to me on other sites in the past 18 months.

I had more than 20,000 pages indexed in google, not I am at 8100. To make matters worse, the API shows me to only have 700 pages. I don't concern myself much with indexed pages, just noting this. What I do concern myself is search engine referrals, and I dropped 80% in google referrals, and have now been down for just over a month.