Social Media Intern - work for a cool new start up and gain valuable work experience

Looking for a Social Media Intern to grow our social media (specifically LinkedIn) presence by monitoring and posting on social networks and blogs, engaging in online forums, participating in online outreach and promotion.
You will be required to optimize content for specific social media channels.
Experience with social media analytics, including Google Analytics and Facebook Insights is important.
Working knowledge of marketing and market research is preferred.
Only 3 to 4 hours per week may be required. We want to start off slow but a longer engagement is expected once we have a better idea of extent of involvement required.