Gumroad founder wants to help Twitter users launch donation-matching campaigns

Created by Sahil Lavingia, founder of commerce startup Gumroad, Donatemates is a new service for creating donation-matching campaigns on the fly.
The site lets you start a fundraising campaign — say, for Planned Parenthood — pledge to match donations up to a certain dollar amount, and track and share incoming donations.
On social media, matching campaigns are a relatively common phenomenon. Lavingia tells VentureBeat that he hopes to give