UserTesting S-1

I think this is supposed to link to the SEC's .gov website where it was originally published:

https://www.sec.gov/Archives/edgar/data/0001557127/000162828...

Never understood why people use usertesting.com vs. mechanical turk for the same thing?

With Turk you can pay turkers way less.. get lots more results & run many successful user tests. You just have the turkers download and install a screen record browser extension, go through list of questions/tasks while their recording and submit their screen records to get paid.