It's google dance and it's very common. Nobody can tell when it will come back.

When you say vanished though, do you mean you cannot find your pages in the index at all?

The same thing happened to me. I heard that Google dance does not exist anymore and that updates are instant? Does anyone have any information on this?

Right, well if it is still visible somewhere in the SERPs, even page 10, then its not a ban. Have you got a google webmaster tools account? If so log in and check your messages in case you have been given a ranking penalty for some reason.

Other than that its the google dance, it will settle in a few weeks. Just keep doing what you are doing at a steady pace, dont go mad and build a ton of links or it will look unnatural, just keep cool and keep going.

No amount of links is too much as long as its consistent. If you build 30 a day for to months, so google is finding them at a rate of X per day, then you stop for two months, then this will effect your "link velocity" and your potential SERP positon. Just build them at a rate you can easily sustain.

You can finally Welcome your website to the BIG Google Dance... I have some there also and many more us too. Welcome to the Party!!!

Give it time and it will find a position and then should stay there.

I think this goes to show that you should not rely too much on Search Engine Optimization, and should try to get a lot of good referrer traffic for your sites. This is something that I advocated in my course, although SEO comes naturally when you use my methods =)

I think your site will come back althought it's not uncommon that a site disappears for various reasons, although nobody really knows why...

Hope it comes back though, cause I know how hard it sucks when this happens

- Chirs

Some of my sites disappeared for weeks at a time. That's why you should have more than a few sites to work on. Then you aren't as emotionally invested when one goes down, just move on and keep working.

I have other projects on the go but this one was going sweet and the commissions would have been great. I have traffic coming from referrals as my pretty links hits are still rising daily. Would just be even greater if it hadnt disappeared for my main keyword.

Would pinging all my web 2.0 sites that refer back get it crawled in a hope that the Google spiders will tell the big G to get it back on the SERPs again?

There is nothing as constant as change.