After 2 months months of daily work, backlinking and so many other seo tactics for a single site, I began seeing progress, I had 2 out 3 keywords on page 1 making me a good amount at least for a beginner with my main keyword on page 2 daily climbing almost hitting page 1. I had a great 4 day run last week, but as of Monday, every single one dropped out of the top 100 including 2 other that I was working on occasionally to bring up to the top. After a fairly good investment in tools I have lost all my traffic. Bing and Yahoo are are getting my site 2 vistors an hour with page 1 ranks on all of the keywords. Is this a prime example of google changing things up? I feel quite discouraged and have invested more than I will now make in 6 months if I am lucky. I have other niche sites built and waiting for their run but with no money coming in anymore I can not even begin to get them ranked. Any suggestions or ideas?