<p>I found it extremely useful in my recent job search. Being able to figure out you're one-degree of separation from the guy doing the hiring for a job you'd love means the difference from your resume never getting picked out of the pile, and getting personally pitched to the guy and having coffee with him shortly thereafter.</p>
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<p>Being able to research companies and individuals is also a big plus... and this is true if you're looking for work, hiring, or researching business prospects.</p>
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<p>The recommendations are a great way to have other people say how great you are. And we all know that means SO much more than trying to say it yourself. (Way less awkward, too.) Some folks suggest "trading" recommendations, but I think that can sometimes devalue the recommendations, making them look like quid pro quo. Of course you probably will want to recommend some people who recommend you. And when that's the case, it's better to space out the dates a bit. </p>
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<p>Some folks go for numbers of connections, but I think it's also important to make meaningful connections. People you feel you really know. Not just random folks trying to make connections. </p>