On September 4-5, our website (blog+forums) traffic went down by about 50%. Since then I've been investigating the cause. I've in the last two months, I've reverted most of the things that could have gone wrong.
Recently I discovered that in GWT, the 'Index Status' shows that we've a HUGE number of 'Not Selected' URLs. I've been told that this could be one of the main reasons our traffic went down. I'm attaching a screenshot of how it looks in GWT-
Few more points that might be useful -
2. I've had a tag auto-link plugin that would find tag keywords on our wordpress blog and link them to relevant tag pages. I've disabled it 3 days ago.
3. Our website URL is - example.com and the forums reside on example.com/community/ . Our community traffic seems to be affected the most.
I'd really appreciate your inputs on fixing the 'Not Selected' URLs.
[edited by: goodroi at 11:32 am (utc) on Nov 25, 2012]
[edit reason] Please no URLs [/edit]