Whatever the issues with the biz plan, Flyi is/was a refreshing alternative. I became a loyal flyer because the staff, service and flexiblity. $35 change fee is a heck of a lot better than the $100 everywhere else.
I booked yesterday on UA for trip this weekend and tried to cancel since I needed to fly into a different city and noticed Flyi offered another sale (which United matched.) I was literally a minute over the 24hour cancel/full refund and they wouldn't give in.
The change policies worked for me on Flyi.