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I do SEO for 5 different clients, all of them are either top for their keywords or at least on the first page. I study SEO all the time and would like to think I know what I am doing.

One of clients wanted me to optimise his car website for ‘VAG Tuning and Styling’ in the UK, and for ‘VAG Tuning’. Now for the keywords ‘VAG Tuning and Styling’ I got his website to number 2 in Google.

‘VAG Tuning’ was proving more difficult as it was much more competitive. I located the website on page 9 for that keyword and started building backlinks soley for ‘VAG Tuning’. The website climbed to page 4 after a couple of weeks then suddenly one it disappeared!

I looked every where and found it on page 19!….then a couple of days after it was on page 21, then 23 but only for the keyword ‘VAG Tuning’. The other keywords I optimised him for he was still in the same strong positions.

I should point out that I only do ethical SEO and never try any black hat techniques. I asked my client has he had any server issues, has any one else been making changes behind the site which have upset Google but he assures me hasn’t.

I am at a loss as how it could drop so dramatically for one keyword but be fine or all the others. My other SEO clients all have multiple keywords ranking well and I’ve never had this situation before. When I study the website (www.cthtuning.co.uk) off page, on page and behind the scenes I see no reason why it went from page 4 to page 23 in a couple of days.

Could anyone offer any advice or what they think caused it? Be much appreciated.

Thank you

Today, I have read one post on SEOmoz blog as follow.

How Many Links Is Too Many?

As per blog & discussion: conclusion is that, 100 link on web page is good for organic seo.

How can I build backlinks for my website that will stick and help my website rank high in search engines like Google, Yahoo and Bing?

What search engine do you use most often/favour?

I was told that if you comment on blogs then that builds backlinks to your website and improves the ranks in google, but if you answer questions on yahoo answers and leave your website url then it doesnt build backlinks and doesnt improve ranking. Why?

What would you recommend me to increase the number of backlinks to my website. I’ve just recently created my website 4 days ago and have already submitted it to Google, Yahoo and Bing.

Do you know where I can find a professional search engine that is credible?

I’ve read how they are very useful and necessary to building an online business. But I do not understand how backlinks work and why people use them.