hello guys, I have been promoting a bunch of keywords by posting in free ad forums, forum signatures and article submission. There is a keyword once ranked so low and after the first fews days it raised dramatically. However after that, it suddenly dropped then kept falling...Now it is on the 9th page, I don't know what happened. Could you give me some advice? Thank you so much.
Do you mean the website or page that has dropped in the SERPs, where it used to have a high ranking? Here's my theory on what might have happened: Search Engines like new content, so with all those links, your new site shot up to the top of the search page quickly. But after a little while, either other sites that are better optimized than yours showed up, or your content grew stale, or something in your linking methods has effected your SEO negatively. Just my opinion.
I think too that it was because your content was new. Maybe you should try to refresh it and do some marketing for it!
I think it is due to some of the forums that I posted in. I checked them and they were probably punished by Google.
Maybe the backlinks from forums are not "quality" backlinks. Try to do blog comments on similar niches, that is at least a form of quality backlinks