Why not? Have you used a language other than Arc to write a web app recently?

If writing web apps in other languages isn't still painful where have other languages/frameworks caught up?

It's still missing some things that most people take for granted.

Are there any Lisps you would recommend (other than Clojure)? (Or languages?)

Clojure is probably the best bet. I don't know much about it but lots of people seem to use it, and any decent Lisp that lots of people use is probably a good bet.