Can you help me analyze why this site has suddenly dropped its rankings for its target keywords:
Just last month (September) it was performing rather well but last week (October on the spreadsheet link above) I noticed it has suddenly started to drop its rankings for most of its target keywords.
I haven't received any penalty notice or spam notice from Google so I thought it was odd that it just suddenly dropped its rankings.
Any suggestions and conclusions to remedy this situation will be massively appreciated.
Thank you in advance.