Years ago I wondered if there was a way of using an electronic dictionary to update the working of Bob Hummer's Think-A-Word trick.
This is a trick in which the spectator thinks of a playing card and a word and the performer divines both.
Then in 2004 I saw Jim Baumgardner's excellent programming work on the web and emailed him outlining the Hummer trick and how it might be accomplished as an interactive web trick.
He had a rough working model on the web in 2004 but has now put another version on his website which you might want to check out.
Follow the instructions on his webpage but then click on the link at the lower left of the page to go to the full page version.
There are a few tweaks that could be made to simplify the trick for the user but the method works well enough.