Hi,

The other day I had a page’s rank change from the first page to the second (no big deal it happens), the next it’s not listed in google apart from doing a site: search. Today it’s back on the second page.

This got me looking into reasons why and I found a tool on this site to check onsite optimization. This is showing a few 500 errors on links, these change if rerunning the tool but always 1 or 2. However when browsing my site I don’t seem to get any???? what might cause this? and would it give an explanation to what has happened to my page?

Is there any other tools I can test something like this with? So I can show my hosting company as they have asked if I can replicate this.