OpenID Marches On
gigaom.com/2008/04/24/openid-marches-on
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
First, JanRain (who run the myOpenID provider service) have come out with an ID Selector widget for web developers. Drop their javascript on your page, and theyll create a control to make it easy for a user to pick their own provider and sign in to your site. Lowering the friction of OpenID use will contribute to its spread.