Hi, in addition to my own comment, I've also found a Feedback comment with the same point from over a year ago.
Over a year - and you have not updated your info.
Your frontpage says this :
All Your Favorite Sources
FlowReader is a simpler, faster way to manage your online content. Add your favorite social networks like YouTube or Twitter, import your feeds, and start enjoying all your updates in a single flow.
That appears to be a lie since there are no options to add multiple feeds to the "single flow" - I ONLY see the option for Twitter.
This NON-EXISTENT feature is the ONLY reason I came to this site.
Very disappointing to find it was not true because I'd thought FlowReader looked like a professional offering.
Customer support service by UserEcho