please correct my interpretations

0please correct my interpretations . thanks.02br
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01b00The stalemate might have persisted if not for serendipitous convergence of social networking technologies, a growing army of technology and transit geeks, and an open-minded new TTC chairman named Adem Gianbrone. He accepts a pitch from local bloggers on how to revitalize the TTC website.02b02br
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00“geek” here refers to “someone who is crazy on something”, thus “transit geeks” refers to those who are crazy on transit.02br
00What is meant by “pitch”? I don’t know how it is figuratively used here?02br
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01b00Created by members of the Toronto blogging community, the grassroots meeting melded citizen activism with crowd-sourcing.02b02br
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00Crowd-sourcing refers to the crowd’s finding out where something can be obtained from .02br
00I wasn’t able to find “citizen activism”, by which what is meant?02br
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01b00 Few meetings are as engaging as ARG, whose emerging narrative evokes players' shared sense of urgency and whose puzzles and clues deepen their curiosity, whose emerging narrative evokes players' shared sense of urgency and whose puzzles and clues deepen their curiosity.02b02br
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00“emerging narrative” means “an art of telling a story, which is in an early stages of its development”02br
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01b00Eventually will become the go-to tools for launching internal initiatives, or they will rally global teams of outside 'expert players' to engage in business forecasting.02br
02b00go –to tools means tools for narrative.02br
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00 Can you put this sentence in a more understandable way? 0-