There is a technical delay in the search function that is included -- the site that they use is undergoing changes and the method for searching won't be available for a month or two, the FBreader folkperson told me.

I would rather they made FBreader download from Gutenberg.org, but they have chosen not to do that so far, so apparently we will just have to wait.

Fortunately, the program Mgutenberg works fine and is available for the N900 right now; it works well in conjunction with FBreader so us lazy people can relax.