The website Nyanglish.com has 2,272 example sentences mentioning Esperanto. (Just type in ‘Esperanto’ in the search box and press .)

The most interesting thing to me was not the sentences, but the Google Trends graph at the bottom. (also found here) But instead of hijacking this thread, I'll make another about it.
(Edit: Made one! Here is a link.)

But back on topic, that's a lot of sentences about Esperanto. I wonder where the site gets its sentences.