Social Media Expert?

I conducted the third 'Social Media' session to my internal team last week mainly focusing on the benefits and power of twitter along with recommendations of how we as a communications department can use the tool. In the afternoon I held a catch up session with my Director of Communications to get him up to speed on how we are currently using it, my research and my recommendations for the future - this generated some positive feedback which I am still contemplating. As I am a placement student I will be leaving the company before September sometime and due to the economic climate they will not be replacing my position. My Director has asked before I leave if I can pass on 'my knowledge and wisdom' to the rest of the marketing and corporate communications associates to ensure that the department continues to move with the times. He expressed that having youth on my side helps with my eagerness to learn and understand social media. As mentioned before his comments got me thinking. All though I am very appreciative of the compliment what qualifies anybody to be a social media 'guru' or 'expert' ? There are no set qualifications to pass nor are there any particular guidelines to follow. An article on ft.com explains how in the current financial climate many organisations and agencies are utilising the use and cost effectiveness of social media tools but "A recent poll of members of the US-based Chief Marketing Officer Council found that a third did not have the internal talent within their marketing departments to engage in new media programmes." What do you determin at internal talent? Someone who can set up a twitter account or someone who uses it effectively? I am sure this is a discussing topic I will have to continue to explore but if anyone can please enlighten me as to how you graduate from the knowledge of social media then please do get in touch. In the mean time I'm off to pack my bags for social media freshers week!