I had been using Fluent Reader for months, suddenly the program wouldn’t load up at all upon start. No visible GUI. Didn’t back up my subscriptions so now I lost all my RSS links with it. :-/ Hopefully there’s an update soon, or someone has a trick to retrieve my subscriptions, at least.
Not seeing any referral links, just invite codes that I’m assuming you’d have to enter manually when signing up. Says here you get a month free of service. Sending it via PM!