You'll find many examples by doing a Google search on keywords "powered by the fluid dynamics search engine".
You can also check out the following sites.
BusinessSeek.biz - Business Directory & Search Engine - add your URL for free
Listings last verified 2013-05-24
New listings are no longer being made.
If you notice that one of these links no longer works or that the site doesn't seem to be using FDSE any more, please write to us to let us know.