Its interesting how Factor avoided "library fragmentation" by trying to include everything in the main distribution - definitely a win here, given that in the smaller communities you can't afford duplication. The average quality of the libraries is higher because of that...

I could never get over the syntax though - even though the #factor folks say its a matter of getting used to and theoretically not "harder" than Lisp, Lisp feels very natural to me, but Factor always required a big overhead.