If as a user and software engineer I am nothing less than aroused by Google Chrome release after reading the brilliant comic (Google Chrome Comic) they are using as presentation, as a mere nitty-gritty developer I am somewhat worried about the fact that we'll have to bitch with yet another browser in order to produce cross-browser web apps.
It might seems a little obtuse (or plain lazy) - but yet at the moment if you are developing a ASP.NET application and you set as a system requirement IE x - no one complains.
On the other end we all now that if you start requiring something different than IE (i.e. Firefox or Google Chrome now) complaints will flood back like crazy.
Hence you have two possible ways to go:
1) develop your ASP.NET web-app optmized for IE (short for 'we didn't even bother running it even once on Firefox or anything else, so if it breaks it is YOUR problem')
2) develop a cross-browser application (short for 'we developed it on Firefox and que serà serà')
Anyway apart from complaining regardless (I am a developer - it's my nature), I am looking forward to put my hands on the thing and assist to a new chapter of Browser Wars (coming soon on your machines and portable devices).