I have found that many people want to take advantage of the networking opportunities that are available at their fingertips (literally) but they just don't know where to start. This link (http://bit.ly/cXLBRu) provides some useful information about creating your online brand from scratch.
There's some great info here, however I would strongly disagree with limiting your connections or friends to ONLY people that you know or that you have done business with. As a career networker and author of "How To Talk to Strangers" (A step-by-step guide to Professional Networking), I encourage you to get rid of this type of thinking. It limits you and your ability to establish relationships.
I certainly recommend that you select/accept friend requests or connections with care. Be selective, but please be bold and learn to connect with strangers.
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