This morning I went down massively in SERPs across all of my keywords. The past couple of days I have been sitting 4th on page 1 with 3 separate entries in the list and now they all have been pushed back. On average all my pages have gone down to about page 3 or 4. My website has good content and I have about 1700 links indexed by webmaster tools. The domain is about half a year old I'd say.