NCBI-PubMed and DOI searches on Google Personalized Homepage

A colleague told me this week about Google's Personalized Homepages. I got especially curious about the integrated calender, which allows my friends to see my agenda and if I am available. So, I created a Gmail account and installed some of the gadgets.
After finding the Wikipedia search I thought *wow*, can I really get multiple customized web-services on one of my most used sites? Yes, I can! I created two of my own services, namely a NCBI and a DOI searchbar.

info, URL (install)

info, URL (install)

And finally I get

It must be noted that I used a very simple customization without any fancy internationalization or dynamic features. I am just wondering if I can also get a chemical PubChem substructure and a similarity search? Rich has posted already a Ruby solution, so I hope we can get an analog solution for PubChem soon.