Intense Debate and Google+OpenID

I just installed Intense Debate, which is like Disqus, only it's owned by Automattic and thus integrates even better with self-hosted Wordpress. So far, I'm liking it, especially because I can install Facebook Connect and Twitter login without having to install separate plugins. Since my blog receives a lot of search engine traffic, it makes a lot of sense to me to have FB connect and Twitter login as commenting options, I feel. The blog also receives quite a bit of traffic from LJ (although I'm not sure how much is really from LJ users, as there's like an index post which happens to be hosted on LJ which links my blog), so ideally I would like to have an "LJ login button" (the actual mechanism would be openID) too) But anyway, with the Wordpress.com button already being there, maybe it's already too 'Nascar-ized.' If no one uses the Twitter option after a few months, I may remove it.

Twitter login didn't require any additional customization, but to install the FB connect, I needed to go to Facebook, make an application, and enter in the API key to Intense Debate, as well as some URLs to FB itself, but this only took a few minutes, and now it appears to work. I had no idea it would be so easy to implement FB Connect, from the user perspective.

Anyhow, while writing a post to users about how openID could be used to allow them to use their LJ identities to comment, I also wondered, what about Gmail? What would you need to type in for using openID with Google/gmail? I actually couldn't figure it out off of the top of my head.

Poll #2530 openID w/ google

Open to: Registered Users, detailed results viewable to: All, participants: 29

View Respondents

Do you know what to enter in the URL box to use your Gmail/Google account as an OpenID? (off the top of your head; don't use Google to find out the answer)

View Answers

Yes
4 (13.8%)

No
25 (86.2%)

What's OpenID?
0 (0.0%)

What's an URL?
0 (0.0%)

( so, what's the answer? and more about Nascar-ization )