Anyone else notice this yet?

[James]

There are cookies being stored on my computer by Facebook and Yahoo( Mostly yahoo) from sites Ive never visited before. I always delete all the cookies and block cookies from my computer when surfing. But when I use Facebook and yahoo, they don't let me log in, useless I let them store the garbage on my computer. These specific cookies, sometimes more keep popping up every time I log-in to yahoo and Facebook.
Check for yourself.
Yieldmanager.com
zenfs.com
yimgs.com
scorecardresearch.com
2mdn.net
This unfair business practices and an invasion of all there users privacy. These are marketing cookies used to monitor peoples browsing and locations.

[Junior]

Aaaaaaaaaaaaaaaaaaaa mmmmmmmmmmmm
I dont know

[Filenotfound]

Lots of sites are like that.

Those cookies are for ads on the page.
And also some are tracking cookies (to better pick ads that cater to you, or so they say ).

If you are worried about it, then get "ad block plus" and "do not track +" addons for your browser. Then you wont have to worry about it.