Well, looks like gMail is in for a rough ride - now a US senator is objecting to it due to 'intrusive' advertising.
http://news.bbc.co.uk/1/hi/business/3621169.stm
Personally, I don't understand this point of view - yes, they're going tobe adding adverts to mails, but they are doing so as part of a
free service that no-one is under any obligation to use. How is it intrusive if people are willing to accept the terms and conditions?