I was using GoFundMe extensively. It has campaigns of unlimited duration, which is a good feature for long-term fundraising, and no upper limit on amounts. However, as a result of GoFundMe’s PR failures surrounding the Darren Wilson fundraiser and several others, as well as their stance on abortion, I’ve withdrawn support for them and moved all my long-term campaigns to GoGetFunding, which is a newly emerging crowdfunding platform that has very similar features to GoFundMe, with a better design. I also have a Patreon page, for people who are interested in supporting me rather than a specific project. And I’ve written a number of campaigns on Indiegogo, and run one of them so far. My first crowdfunding campaign predated the emergence of any sites like Kickstarter and Indiegogo by several years, so for that one I built my own site. Being Canadian, I’m not able to run campaigns on Kickstarter, but it’s also not suitable to most of my campaigns.