One of the challenges in using Google+ is that it's one more social networking application you have to pay attention to. Chrome extension Gplus Tweet cuts down on the workload by automatically sharing Google+ updates with your Twitter account.
The extension adds a 'Post to Twitter' checkbox to your Google+ status updates; select this and what you post will be automatically shared with Twitter as well. The checkbox also includes a character counter so you can stay under Twitter's 140-character limit. You'll miss out on some of the benefits of dedicated Twitter clients (or the Twitter site) such as URL shortening, but it saves posting the same link or thought on multiple sites.
Gplus Tweet is a free extension for Chrome only. You need to go through the slightly fiddly Twitter authorisation process to install it; the download link below includes instructions on how to do that.