[soofaloofa]

They can always say no.

[chris_mahan]

They can also say "Fuck you" loud enough for everyone in the starbux to hear and for the manager to call the police and escort you out.

I guess in a way that can get your site some publicity, but I gather that's not exactly what you're after.

[kenbellows]

The option to say no doesn't make it any less annoying.