Great posting, chock full of far more resources than 140 characters can possibly accommodate.
For instance, did you know there is such a thing as a "twesume"--like, a resume, but for Twitter?! Here's the internal link from the article above: http://mashable.com/2013/09/21/twesume/
You can look for jobs, post your twesume, find advice, follow companies.
And why is now an especially good time to think about expanding your job-hunt strategies to Twitter? Because the company Twitter is in the process of setting up an IPO, an "initial public offering." They are going to issue stock for the first time on the New York Stock Exchange.
Everyone in the business world is talking about Twitter--will the stock bomb out like Facebook? Does Twitter have the right stuff to attract investor dollars? Will it be able to sell enough advertising to make it a profitable company (rather than a hobby on steroids)?
In other words, for the next few months, Twitter will be riding a wave of popular buzz. Hop on board!