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It isn't very easy finding out the best performing keywords of a competitor, but how about searching for terms you think a visitor would find relevant, and seeing if your competitions shows up for it? Then search for variations on that.

When you create your own campaign, make sure you do phrase matching or exact matching, that's the only way to know how well a certain keywords performs, I've seen google send clicks for completely irrelevant searches for broad match which their algorithms thought was relevant.

I changed servers a few weeks ago and have been 99% dropped from the rankings. I've searched for an answer in many places, a few people said that google does penalise you for a major change in the site like a server change, but only for a few weeks.

So hopefully both our sites will be back to normal in a few weeks. Fingers crossed!

That was my first thought also, but no returns of rankings after 4 days now

Think about it this way, if you are a user of technorati, would you be interested in your site? Would you click on an article and read it?

If yes, it's relevant, otherwise probably not, but even so I find it highly unlikely to affect you negatively.

Last week I decided to switch for a UK server to a US one at Hostgator since most of my visitors are from the US.

About nine hours later 99% of my pages disappeared from google rankings, only a few non-relevant pages are at position 100-200. All decent (1000-2000 word) articles on specific topics, are gone.

These pages were getting 2-3 minutes per user of readership and a low bounce rate, so I think they were pretty good quality.

Does anyone think it's possible I got accidentally added on a blacklisted IP? Or why would something like this happen.

Since then, I've tried switching back to the old IP for 3 days, that didn't work. Now I've filed a reinclusion request with the details.

Has anyone had a similar experience? What can possibly cause this massive drop in rankings and traffic?

Any help is much appreciated!

It isn't very easy finding out the best performing keywords of a competitor, but how about searching for terms you think a visitor would find relevant, and seeing if your competitions shows up for it? Then search for variations on that.

When you create your own campaign, make sure you do phrase matching or exact matching, that's the only way to know how well a certain keywords performs, I've seen google send clicks for completely irrelevant searches for broad match which their algorithms thought was relevant.

Think about it this way, if you are a user of technorati, would you be interested in your site? Would you click on an article and read it?

If yes, it's relevant, otherwise probably not, but even so I find it highly unlikely to affect you negatively.