the first girl said she didn’t think services needed to be combined

This is something I found in my own research too. It appears most normal teen users cant stand mashups. I was building a platform that converted between sms, email, IM, facebook message so that you wouldn't have to check all your messages in different clients and ran it past normal users. They hated it. Users want communication mediums to stay seperate!

I wonder what this same conversation looks like in the suburbs of Connecticut, rural Kansas, or inner-city Chicago. I'm sure these SV kids are savvier than most (and richer), but this is still useful information.