On Facebook and Twitter - 80% of the content that makes people come back daily for more has links in it. These links could be application specific, sure they can, however the attention span on Twitter is small enough without putting barriers between users and the product / content served. Take away the web and social applications, no matter how awesome they are, will lose a lot of value.<p>I actually think the opposite is true - I think that Facebook and Twitter are going to die eventually. That's because the need for these social networks was satisfied in an age where phones weren't directly connected to the Internet. One missing point from these discussions is that a social network already existed before these - with much stronger ties between people - a social network enabled by your contacts book. It didn't scale however because of a lack of software and because calls / SMS messages are expensive. If mobile carriers would pull their heads out of their ass and made SMS free, then Facebook and Twitter would become irrelevant.<p>Why? Because then people could send updates and links to other people, regardless of their device type, anywhere in the world. Then you could have evolved SMS managers that knew how to handle groups, deliver digests, take care of spam and so on (like email clients do). If you need a stronger indication that this is true - consider how nothing replaced email yet, no matter how many predictions of death went by ;)<p>Nice quote from Seth Godin linked in the article:<p><i>The problem with just about every prediction made by industry firms like Forrester (all the way back to 1985 when these firms said that the Commodore 64 was going to change the world–until the VCR interrupted to become the next big thing) is that they are based on sophisticated analysis of what’s in the rear-view mirror.</i>