olia lialina: No question, it is vital to update. If there is anything that is in the nature of new media it is updatability. And there are many cases when you are longing for an update and would rather demand the right to update 24/7.
At the same time users are forced to update, though newer version doesn't mean better version, and better version doesn't mean that it is better for everybody.
Quality is not the only issue. Another argument against forced updates is that they lead to alienation, because users are denied the chance to get attached to a particular program or operating system.
Flick Harrison: The cardinal rule of critical systems is "don't update willy-nilly." If my main machine did an update that killed something, while I was on deadline, oooooooohhhhhhh angry.
It's also smart to avoid .0 releases, because these days beta-testing often happens in the marketplace.
San Nuvola: Terms and conditions are merely a way for website owners to discharge responsibility on the one hand, and to maintain banning/moderation power over the users. Maybe its better to empower users by letting them impose their own terms of usage - i.e. usage as active praxis rather than something conceded by platforms. Or to negotiate them (this is appliable to updates as well, in the general tension towards user rights).