Considering the competition... Rated 3 out of 5 stars
Well, it's not bursting with features is it? I'd sure like to be able to change the font, and its barring of whole-document search is a pain [must search chapter by chapter, sigh].
On the other hand, user-friendly/ergonomic epub readers are very rare [CoolReader was only tolerable one for me], and it IS free, so i'm grateful for it.
Days later: stopped working. Just get "Connecting...." lockups. Oh well, CoolReader was better anyway.