irishsolar - 8:08 am on Apr 10, 2012 (gmt 0)

However, I just added a WP blog post and it was picked up an in the #1 spot within 30 minutes.

I made small changes to one of my site pages as an experiment and...bang... within hours it was in on page 3 of the SERPs after it had fallen off completely.

I agree that freshness seems to be at play (as well as a multitude of other things).