There are two main solutions that work the best for solving this problem. One solution, PublishSync, allows for the simple sharing of content between the main social networks. The other solution, SGPlus, enhances your Google+ experience, but doesn't affect your other networks. Below is a breakdown of each.
Cross-Posting With Google+ And Other Networks
If you are looking for a solution that allows for posting Google+ messages on Facebook or Facebook messages on Google+, this extension is for you. Publish Sync is an extension for Chrome that ties in:- Google+
- MySpace
- Digg
- Plurk
- Sina
PublishSync will then also show up on your other social networks underneath your updates screen. When posting to Google+ from another social network, PublishSync works with existing circles so that you can select only the circles you would like to share to.
Twitter integration is also smooth and allows for the same targeting options:
Integration Of Facebook & Twitter On Google+
SGplus is the new name of extension formerly known as 'Start Google+ plugin (changed per request of Google) for Chrome, Firefox (currently seems to be down) and Safari. This extension allows users to make Google+ their one stop social site by integrating Twitter and Facebook into Google+. However this does not give social sites other than Google+ any additional functionality, it only enhances Google+.SGPlus allows users to pull in their Facebook wall posts and Twitter feed and also post Google+ updates on Facebook and Twitter. Once installed with the social accounts logged-in, the new Google+ update box will look like this:
Maybe the biggest attribute that SGPlus offers users is the ability to see their Facebook & Twitter information while in Google+. These social networks show up on the left hand rail underneath the Sparks content. Users can "like" and comment on Facebook without ever leaving Google+. Here is an example of what Facebook looks like:
Twitter also functions similarly to Facebook with SGPlus. Tweets can be replied to and retweeted, directly from within Google+:
Overall both of these extensions may enhance your social experience if you are looking for easy integration of Facebook and Twitter into Google+. With any add-ons or extensions, it is important to know that each of these options require access to your social accounts as these solutions truly are 'hacks' for the current social landscape.