Whether you’re a Facebook fan, Twitter lover, Stumbleupon … uh … stumbler, you know there’s something addictive to sharing things online. It’s not just you. Millions of people are seemingly addicted to social media in its many forms.

Thanks to a new infographic from Marketo, we now know the 10 common types of social media addicts. Do you fall into one of these categories?

Personally, I was a bit sad to see that I exhibit at least a few symptoms outlined below. While I don’t have anything on a business card, I do like to check my Twitter feed probably a bit more often than I should…

Click the infographic to enlarge. Some of the type is a bit small.