Actually, as a result of this thread I downloaded the latest Stanza and it does work with my iPad so I'm back to it.
As to the previous poster -- it may or may not be true that Stanza will never be updated, but I wouldn't count it completely out. 5.1 may not break Stanza -- it might take a complete update to something like a 6.x to do so, and that may not happen for a year or more. Who knows that advances in eReaders there will be by then?
The unfortunate thing is that Stanza has options that NO other reader does -- the ability to adjust indent, distance between paragraphs and line spacing all at the same time... no reader even offers anything like that (that I know of) let alone the superb collections. I played around with my wife's Fire and the highly touted Android app, Aldiko, is a poor substitute.
I don't see eReaders getting better, though -- has anyone seen Kindle offer MORE formatting features, even on Kindles? It appears that most folks are just happy with accepting the defaults (which for me are completely unacceptable).