Google is ubiquitous , and it seems that everything can interact with everything else. There's the search engine, mail , sites , checkouts , adsenses , picassa , blogs (like this one) , and it seems to be growing exponentially.
One of the good things about this is that it empoweres people to create websites and the like and have complete control over them. Two such sites are Lovers Desires / Hidden Desires and Keith's Custom Colours . I've been advising the creators , who want to sell stuff on the site. Imagine my surprise when the Google shopping cart cant be integrated a Google site. You have to use a site widget which is driven by a Google Document Spreadsheet . This took an age to work out.
Just surprised that one Google product is incompatible with another . Not only that the Shopping Cart Merchant page is integrated with the rest of the Google User Account. Just amazing!!