TLC5940 LED Driver Experiences?

I am looking to try some setups with TLC5940s and an Arduino using the library, anything should I look out for? Anyone have any pointers for using this setup with servos?

I found these on Ebay and was wondering if it was a good deal or not: http://cgi.ebay.com/TLC5940-TLC5940NT-16-Channel-LED-Driver-IC-NEW_W0QQitemZ220544554229QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item33597ad4f5