I am hoping someone on here may be able to give me some clues as to why the Google rank of a website I run has suddenly - at some point in the last week - crashed.
The website has been on the first page of the Google results for the main search term for well over a year, with the help of the phpBB SEO mods provided by this site :)
At some point in the last week, without me having changed anything on the site, it has suddenly crashed down ...