I met young Johnny at the Radical Planet Unconference in September 2011. He wasn't a session leader but he was definitely one of the stars of the show.
Johnny appears to have been a regular 3rd party recruiter but, now, alas he has gone over to consulting for recruiting on social media. (You can bet that Jerry isn't going to like that).
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Historic Note: The Irish Invasion of Canada
The Original Shamrock Summit