A platform that has 5.5 million unique monthly users is certainly nothing to avoid.
This is a venue that is better suited to brand recognition than it is for direct sales. Also, this is where you can build authority, and develop some serious links back to your site.
You will need to incorporate LinkedIn into your overall social media strategy.
Using combination of both organic and paid media marketing to maximize your brand’s recognition across the LinkedIn network.
Managing your company’s brand via your LinkedIn business profile, and engaging with your followers, building awareness via LinkedIn Groups should be your primary focus on Linkedin.