Leah Betencourt of the Star Tribune contributes a post to Mashable on the impact of social media on the newsroom. Her piece is largely a recounting of do's and don't's from the Poynter Institute's Kelly McBride.
1. Use social media because familiarity with the tools is important.
2. Always be mindful that you represent more than yourself as a journalist.
3. Assume your Tweets and posts linger longer in the digital sphere.
4. Ask your boss to follow you for accountability.
There are, of course, many more influences she could have mentioned: how trending can be used to find relevant content for your audience and how social media offer new distribution, dispatch and solicitation channels, among other things.