A few missing / dead links

Just tried to visit every link listed, here are some that seem to be dead

Reddit:

Boing Boing - http://boingboing.net/sub/ - BoingBoing is still active but this link does not go to submissions page
BuiltInChicago - http://www.builtinchicago.org/send-us-tip - active but link is incorrect
Discova - http://www.discova.co/ - blocked by adblocker
Loop - https://app.loopinput.com/ - down
SideProjects - https://sideprojects.net/ - down
Software Advice - https://softwareadvice-markets.questionpro.com/ - down
Startup Benchmarks - https://www.startupbenchmarks.com/ - down
Startup Register - http://startupregister.net/register-your-startup/ - down
State of Tech - http://stateoftech.net/advertise?submit-an-app-for-review - down, redirects to dailylearn.com
The Changelog - https://github.com/thechangelog/ping - no longer in use
Top Alternatives - https://topalternatives.com/ - down - blank WP site