Another search engine for chemistry

Query Chem is a new search engine for chemistry. It will accept text search terms, a search string in the SMILES chemical nomenclature, or a drawing of a chemical structure (like Chmoogle). From the description by its developer, Justin Klekota:

Query Chem lets you combine chemical structure and text searches by finding the names of structures similar to your query structure and combining them with user-specified search terms which are all then sent to Google. Query Chem's search results are prioritized by their relevance to your chemical structure and your optional search terms combined. Query Chem has many of the features of Scifinder Scholar since it also links to Google Scholar (with the added bonus that it's free). Its greatest strength is that it's not limited to a single database, but instead it captures the structure-property relationships embedded in the text of journals, commercial web sites, public databases, and any other HTML document indexed by Google.