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On Facebook, you can make your profile very private so that no one outside of your network can see anything other than your name. You can also block individuals from contacting you. Twitter allows you to make your feed private so that you pick and choose who can follow your Tweets.
LinkedIn is a favored company among tech investors. It had a massive IPO, lived up to expectations afterwards, and continues to impress with the amount and variety of its revenue sources. That doesn't mean there haven't been some bumps along the way.
Twitter on Tuesday linked to LinkedIn, letting people share updates and tweets between the hot microblogging service and the career-oriented online social networking website.Twitter synchronization features will roll out during the next several days, according to LinkedIn co-founder Allen Blue."When you set your status on LinkedIn you can now tweet it as well, amplifying it to your followers and real-time search services like Twitter Search and Bing," Blue said in a blog post.