Dropping and gaining rankings every few weeks. Why?

Hello,
This is my first post but I've been a member for few months and have been little bit more active through pm's. I have a question that i can not find an answer to.

I have few niche websites, they rank pretty OK, but they have one thing in common. They rank well and then suddenly drop in rankings for no obvious reason(at least to me). When I say drop I mean like from position number 3 to page number 15 or 30 or nowhere to be found. Then usually after few days, sometimes little longer they get back to the same position or even higher, to drop again after few weeks. Interesting thing is that it doesn't matter if I work on links or not, it just happens. Sometimes it happens that instead of the main page dropping 15 pages it almost totally disappears for my main keyword ranking and I find subpages ranking for the particular keyword, however the main page still ranks well for different keywords. By the way the websites are around year long, only white SEO is being implemented and the process of dropping and gaining just keeps repeating.

Has anyone experienced something like this? Any info is very appreciated.

Thanks.

we have a one thing in common.. we are affected by the Big G Dance.

This is normal from everything I've read and experienced. Until a website becomes firmly established you can expect it.

Just keep on building back links

Thanks MonoPuff.

I was not aware that this can actually take a year or more.

Yeah I have the same problems! It is driving me insane.
But someone who had the same issues said pretty much what MonoPuff mentioned and it is true. Once the site is established and is a 'bit older' it does become more stable.
In the meantime...try not to go nuts

Mine disappears for weeks at a time, for everything apart it's own URL. Then comes back for a day, normally at position 1, I get some thousand views, and disappears again. Annoying, to say the least. =p

verilix said:

Mine disappears for weeks at a time, for everything apart it's own URL. Then comes back for a day, normally at position 1, I get some thousand views, and disappears again. Annoying, to say the least. =p

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In this case you SURELY have to change something. Any hidden text u didnt recognize? Anything similar?