iDP you ask? Well, that's the new acronym you need to familiarize yourself with... it stands for "iDentity Provider" and in the world of OpenID, is akin to a credit card provider like MasterCard or Visa -- since they provide you with a card and a network that accepts their plastic. Of course, Technorati was already a consumer, allowing you to claim your blogs... and now you can use your Technorati profile URL to log in at other OpenID enabled sites, like Ma.gnolia.