Wowbrary Notifies You of New Library Books, Movies or Music

Lifehacker points to a service called Wowbrary, which,

regularly informs you by email and/or RSS about your chosen public
library’s newest books, movies and music. We make it easy for you to
browse through the latest additions and place a hold on a new title.
This is a free user service supported by grants, donations,
sponsorships, book sale commissions and volunteers.

It’s free to the end user, but not to libraries, which must sponsor Wowbrary.  Only available in the US, and geared towards Public Libraries.  Are any of you using this?