Today, this blog implemented RPX, so commenting is even easier than before. Use multiple protocols including OpenID, Facebook, Yahoo, and others.
RPXNow seems to make it a bit easier for users to log in and comment, but there are some possible disadvantages of using RPX.
#1 by Brian Kissel on August 24th, 2009
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Glad you’re enjoying RPX. Readers can also see RPX testimonials at https://rpxnow.com/testimonials and example deployments at http://bit.ly/G4eEZ. Also, w.r.t. the possible disadvantages, if you read the response to this post and follow up you’ll see that the supposed disadvantages were misunderstandings about the way RPX operates.