Anyone out there who buys a lot of ppc. I was wondering what kind of referrers you get.

I notice that google has giant unique identifiers that are complex. .

however bing and yahoo seem to have simple ones like :

http://www.bing.com/search?q=online+...&sk=&form=QBLH
http://search.yahoo.com/search;_ylt=...8&fr=yfp-t-701

Can anyone confirm this for me. I'm wondering when these referrers goto your page are the you getting the same exact URLs or are they getting thousands of unique dynamic urls?
Assume you are targeting only one keyword. .

If you but 10k google adwords clicks . .. .are you getting 10k unique referrers?

If you buy 10k bing ads are you getting 1 referrer?

If you buy 10k yahoo ads are you getting 1 referrer?