Sparkplug is a new site and service that facilitates musicians renting gear and space from each other. But they go beyond just a Craiglist-like listing to add a system with such features as clear procedures, deposits and id verification. It's potentially a great service but, in what I think is a simple oversight, you can't figure out who the people running the site might be which kind of contradicts their trust-building features. [Update: I've been informed by co-founder and CEO Julia Wilde that Sparkplug is adding an About page with info about the founders today, three out of four of...

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