Passing session information with Web Objects

My team’s lead developer is trying to figure out a way to pass session information in some other way than via the URL when using web objects.

Our site was built using web objects, but the problem we’re now having is that when bloggers blog about us and post links from our site in their blog posts, the URL typically includes session information it and isn’t valid for anyone other than the person who copied the link in the first place. Bloggers trying to point people to http://www.example.com are instead blogging links such as https://www.example.com/cgi-bin/WebObjects/example.woa/wo/0.11.3.8

Anyone have any suggestions I should pass along to him?