I have a blog, no spamming nothing black hat. I usually post testimonials, press releases, or software patches etc... On occasion mabey 6 out of the 50 posts i will add a single link pointing externally to a domain with an article thatis relevant. Those pages are wh as well. I notice that I went from a PR5to no info available. Do i need to worry? All ofd my serp rankings are still good for the blog, so i am confused.