umlaut questions
 

Is a 4 letter domain with an umlaut worth shit? Would www.cars.com be any good if the "a'" had two dots over it? Is it ok for SEO or does google see it as an entirely different character?

maybe for germans sites?

im pretty sure google sees it as 'a' unless on .de

I was reading about umlauts somewhere though.

you could always do a search for it and see what you find.