I\'m trying to build a Google+ share feature on a website just like the one you see on questions here at stackoverflow. When you click that Google+ button an a question it
I personally suggest Google Plus Interactive Posts button https://developers.google.com/+/web/share/interactive to use in your apps/websites.Here Google Plus allows many customizations to do according to the requirement. I have used it in my app. Its a better option than Share button.
It looks like the new share URL is live now for all domains. The mobile 'hack' no longer appears to work, but something like this: https://plus.google.com/share?url=http://favo.rs does
Update: While still not officially supported by the Google+ platform the share URL does now work for all domains.
https://plus.google.com/share?url=http://example.org
It is probably a limited rollout with a few specific partners. The share URL has not publicly been announced as a supported feature by Google.
Google+ feature requests:
https://code.google.com/p/google-plus-platform/issues/detail?id=50
https://code.google.com/p/google-plus-platform/issues/detail?id=153