Just to let you all know that we have added chemical search to the chemicalize.org site.
The search let's you draw, upload a structure or name a molecule as input and perform various structure searches (substructure, exact match and similarity) and see the resulting structures with the query highlighted in the result. From each result structure you can go on to see a list of web pages where the structure was included. An elegance is that you can also see other structures on the linked Web pages to understand if the page is chemically relevant before you visit the link. Of course the link is also chemicalized. See below for screenshots.
Other features added include: Auto-complete, structure images for all auto-complete names and roll over large versions of structure images
Hope this is useful/Alex