I have seen in some threads on this site and others the question come up as to how much of your social network marketing should be geared towards sales generation. As you are trying to build a community by being seen as a source of info and knowledge and leaving your regular website for sales-related activities, the ratio by which you mix the two in your social networks could possible alienate community members.
I suggest to my clients to use a ratio of 10-12 informative posts to 1 sales-related post (talking about sales wins or how you helped a customer with your products and services) as a good mix. What is your strategy?