I want my Google+ account to be automatically updated when I post a tweet on Twitter.
Try this: joshkerr.com/post-your-tweets-to-your-google-plus– RondoApr 18, 2014 at 1:43
Google+ API is not yet public, so there's no way to auto-update your Twitter posts to G+.
You can, however, do the other way around: post to Google+ and have it auto-update to Twitter. And Facebook too.
It can be done. Have a look at twoogleplus.com. Its an online service that automatically cross-posts tweets to Google+. No browser extension needed. Feb 24, 2012 at 14:08
It is now.... developers.google.com/+/api– RondoJul 9, 2014 at 2:03
@Rondo the api is still read only.– Sathyajith Bhat ♦Jul 9, 2014 at 2:16
So it is. My apologies and thanks– RondoJul 10, 2014 at 20:03
It's not possible (currently) to update Twitter from G+ without a browser extension. You should wait for the API.
The best way to update Twitter and Facebook from G+ that I have come across is to get your public RSS feed for your Google+ profile and then use a service like Twitterfeed to update Facebook and Twitter or use Manage Flitter. More detailed info here: http://iag.me/socialmedia/tools/how-to-update-twitter-and-facebook-with-your-google-posts/
You can even decide which posts you want to sync to Facebook and/or Twitter using tags (eg #fb or #tw)