As everyone probably knows by now, social media marketing (such as LinkedIn, Facebook, etc.) should be a part of your internet marketing strategy. It's a great way to help build your brand and help potential clients find your website. It seems overwhelming when you are just starting out and trying to become connected on the various sites. I just found this great article on how to get the most out of the social networking sites, as well as how much time you should devote to each activity during the week:
http://searchengineland.com/080108-134105.php
BTW, this site, searchengineland, has a TON of information on all aspects of internet marketing.
Yvone