Google Supports ODF
Well, it already does with its online office suite, but now it lets you search for ODF files and displays converted online:In addition to HTML files, Google indexes other file types like: PDFs, Microsoft Office files, Shockwave Flash files and more. Google offers you the option to read the HTML (or text) version of the cached file, in case you don't have an application that opens the file.
Google added OpenDocument format to the list of supported documents.
The post has interesting numbers of how many files types are currently found: not many for ODF, currently. It will be interesting to see how things change with time. (Via Bob Sutor.)