I was looking for a faucet plugin for Wordpress a year or so ago, but I couldn't find any. I can't wait for this faucet plugin for Wordpress to be released because it might be useful when I start a Wordpress site.
Another year later =) :
https://wordpress.org/plugins/bitcoin-faucet/wordpress plugin is great idea and the link you shred I visited this and found three faucet demo but these demos do not looks good and looks very ordinary so wordpress plugin should use same template of wordpress site.