On vouchertrader.co.uk today, there's this look at some more issues that can be caused by session IDs with the indexing that Google performs.

While search for the VoucherTrader site in Google I noticed that the description for some pages was coming up as a PHP error about sessions. I actually thought I'd fixed this problem before by preventing PHP from creating sessions when the browsing user's user agent was the Googlebot. Unfortunately I was wrong...

Come to find out, he figured out that, at the time the GoogleBot was coming through, the PHP install wasn't making a session for it. For a fix, he threw in a check to ensure that the user, based on the HTTP_USER_AGENT value, would start the session correctly. The code is included in the post...