Websites & The Network Effect
I took this piece of copy directly from the 37 Signals blog. When it comes to websites, it’s what often the one thing we really need to break through. I also think it is why ‘free’ on the web just wont go away. It’s something web startups just can’t ignore.
The Network Effect: The network effect occurs when the value of a particular good or service increases for both new and existing users as more people use that good or service. It can also occur when other firms design products that compliment an existing product, thereby enhancing that product’s value. For example, the fact that there are literally millions of people using eBay is the thing that both makes eBay’s service incredibly valuable and makes it all but impossible for another company to duplicate its service.

[...] Social networks are social phenomena, after all, and much of the best work on their dynamics has been done by anthropologists and sociologists, not technologists or marketers. As social entities, networks are understood as clusters of shared relationships and interactions between individuals. These interactions can be brief or persistent, light-hearted or serious, and so on. Our social interactions are not lined up like dominoes – I know you, and you know Jim, and he knows Kim, and she knows Tim – but tend to be mutual and interconnected. Whenever several of your friends forward you the same email, you’ve been hit by a network effect. [...]