for me I am a huge fan of http://www.dropbox.com http://www.dropbox.com I know its kind of mainstream (and not sucking up to YC) but I just love it and always

for me I am a huge fan of http://www.dropbox.com http://www.dropbox.com I know its kind of mainstream (and not sucking up to YC) but I just love it and always use it as an onboarding example.