This is a little complicated.
First there is the "Google OpenID URL" or https://www.google.com/accounts/o8/id. This is useful when signing up or logging in as it will redirect to the proper URL.
You can also use your Google+ profile URL. Go to https://plus.google.com and click "profile". You will get a URL like https://plus.google.com/...
Note: In order to perform this in the New Google Apps dashboard you'll need to:
Login to Google Apps Control Panel as an admin
Federated Login using OpenID
Check "Allow users to sign in to third part websites using OpenID"
Google has cancelled OpenID URL logins, unfortunately, according to the Google One Support representative I spoke to today. (They provided chat ID 7-0404000030383 for future reference, though I assume only myself and authorized Google folks can access it.)
So none of the schemes provided in previous answers here (via your Google Profile, Google Plus, etc) ...
You can "nickname" your email using plus-sign addressing (plus-sign suffixing).
So, for instance you can sign up using these emails:
And they will all be delivered to firstname.lastname@example.org, providing that you are using GMail. This will allow you to keep one username and password, in your case ...
You are absolutely right that this can be confusing sometimes. In case of Uber it is especially weird since the Google search result for 'Uber app login' shows
Sign In. Connect with Facebook. or use email. Email. Password. Remember Me. Sign In. Forgot Password. Don't have an account? Sign Up.
and the Uber page itself does not offer this option. However ...
The Trello help site lists the following steps:
Once you've ensured there's not already an account for
email@example.com, use the following steps:
Log out of Trello
Log in to Trello using your firstname.lastname@example.org account.
Create a password for this account at
https://trello.com/your/account (note the password, you'll need it
Are they seriously saying they're going to follow people and post tweets using my account without my intervention?
The scope of the authorization is that should you authorize, they can tweet, follow, and update your profile.
Note that it's they can, not that they will. Twitter's authorization scope allows for read-only, read+write, read+write+send dm
Let's just start with Twitter for the site that you mentioned weheartit.com
If you don't how that login is provided. The site(weheartit.com) had created a twitter application at http://dev.twitter.com and made the app with read , write permissions. (You don't wanna get into the coding part unless you're a programmer).
It is the same with Facebook, Google+ ...
SourceForge is attempting to phase out OpenID logins in favor of social logins, according to their support forum.
For now, you can append openid to the login page, so it looks like https://sourceforge.net/account/login.php?openid.
This is not possible on Wordpress.com hosting. The "plugin" optionality is highly limited and curated on Wordpress.com - so to get a wider breadth of functionality, an upgrade to self-hosted WP is needed.
Ok, so here is what was going on. The application in question was using Google's OpenId API for authentication. Google implements something called "directed identity" and basically what that does is returns a different OpenId for every domain that is requesting authentication. That is understandable but how does that explain the issue I was seeing? Well, ...
I once closed or disabled my Google+ and next time I wanted to log in to Stackexchange I got a weird message about missing Google+ and it wanted me to activate it again.
So if you close your Google+ you will probably not be allowed to use OpenID until you activate it again.
At least that's what happened to me. This was a while ago so Google might have ...
Signing into a third-party service with your Google account usually does give Google services access to activity on that account. This is useful to the end user mostly on social services by allowing you to easily share activity on Google+.
By default, your posted activity in apps you've signed into with Google is visible to everyone in your circles on G+. ...
The OpenID Foundation has lots of information.
Many common CMS platforms, like WordPress and Magento, have their own plugins already built.
If you just want to use Google, you visit their Federated Login for Google Account Users page. For just Facebook, visit Facebook Login for Developers.