Why google removed the websites I linked from its search engine?

I linked my site to many forums. Google then include four of that forums on its list. But now Google removed two of them.





I mean when I enter the keyword of my website in googlle, only two website is listed but yesterday it was four.





Why did this happen?

Why google removed the websites I linked from its search engine?
Google keeps changeing their algorythym ...my sites can show hundreds or thousands of links then hardly any, then back up .... just keep adding one way links and your traffic will go up.
Reply:Why not ask Google ?





Could be they are simply further down the lisst, or their "listing" algorith has changed how it references them
Reply:Google bases it's sorting/inclusion on a number of factors.... pay and popularity (i.e: hits per day) are only a couple. Could be that the 2 that got dropped stopped being a popular and it got moved down the list or removed.