There is one problem: I've heard that more AOL users share same IP at the same time or in a given period of time. Can someone tell me how are you solving this in your search engines. I mean, somehow you must know if this user already made a click to save it as invalid or valid click.
The other problem I see is that advertiser won't pay for 3 unique clicks if they were made by 3 different users all sharing same IP.
The IP you get from the SSL connection to an AOL subscriber is the IP address assigned to their individual computer. That is to say, for the most part, IPs gathered from AOL via HTTPS are similiar to IPs from most other non-caching ISPs.
There is always the possibility of address reassignment where a person goes to your site, hangs up, and someone else gets that IP address and visits your site.
IP addresses are only part of a picture to determine 'uniqueness'.
1) how do i make that https working (will be slow, but maybe I can bound this to AOL users only?)
2) what "other ways" do you suggest to successfuly track the user (instead of using IP only).