I would only trust Kickstarter. IndieGoGo has a history with shady projects (not that KS doesn't, but KS has higher turnout and a more rigid screening process), and other sites like Gofundme are more for donation type stuff rather than investors.
So far most of the campaigns I've backed have delivered, although some of the games I backed are still in development and exceeded timeline projections, none of them have gone bankrupt or have given any indication that they won't deliver.
Ironically, the first campaign I ever backed on Kickstarter was Animusic 3 in 2012. They guys needed funds for a new server, and I had DVDs and Audio CDs from both their prior projects, so it was a no brainer. The expected delivery date was Oct 2013 and I backed the CD+BluRay. Early 2015 I received their Audio CD, no word yet on the BluRay but I haven't given up hope yet as they are nice guys and still in business and would never screw anyone.
Ironically I backed Year two of Retro Mag and so far have been underwhelmed. After the RetroVGS/Chameleon SNAFU, it is safe to say I will not be supporting these jokers ever again.
Do continue to buy games from PikoInteractive and Collectorvision; they are both great companies who basically got shat on and thrown under the bus by Mike Kennedy and his posse.