Why not just K.I.S.S. it?
As clever as all of these names are, with folks apparently gravitating to MUSE, why not something as simple as E-Finder?
The name should capture the essence of the service without making people have to think one millisecond about what it means/does and thereby make it easier to remember. Marketing 101.
All of the other names sounds like many of you are letting your Muse run amok
Muse could mean any number of things to any number of people and would involve some explanation. It may get style points for cleverness but still needs additional verbage to say what it does. He isn't launching a new piece of hardware, he's launching a search engine to help all the e-book readers find e-books at the best prices.
E-Finder is easy to remember and says what it does, finds electronic material.
"Find your next great read at E-Finder" (or EFinder or efinder, you get the point) Just 7 words.
"Find the next great book at E-Finder"
"Find your next great story at E-Finder"
"Find the next great story at E-Finder"
K.I.S.S. it people, K.I.S.S. it.