Some kind of ads is showing on stackexchange.com also.. Which company is providing is it google. or is it affecting me only...
closed as not a real question by Su', toomanyairmiles, DisgruntledGoat, danlefree Sep 11 '12 at 17:14
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.
I'm getting the feeling you may have some sort of AdWare installed on your computer. This is almost certainly true if the ads show on every site you visit. I just visited the Starbucks website that you had in your screenshot, and I didn't get any ads at all.
I suggest running some type on anti-virus/anti-malware scan on your computer.
Malwarebytes Anti-Malware is a good program to use. You can find the free version here: http://www.malwarebytes.org/products/malwarebytes_free