1. I don’t consider the technology disruptive. Kuro5hin invented the user driven news model 4 years before Digg. And I don’t consider something disruptive if it doesn’t actually disrupt a market. Digg disrupted Slashdot, that’s all, not any mainstream news sites.

2. It’s too techie for the mainstream.

3. Most of the articles suck. In a post a while back I mentioned a friend of mine saying that Digg would be great if they just had someone filter out the crap (i.e. an editor).

4. It’s too easy to manipulate. Post an article, IM your friends, get on the front page.

5. Popularity is not personalization.

- It is disruptive: you really think it’s not?
- It has a business model: advertising
- Building Digg.com in a weekend: yes, but you cannot build the network of diggers, the traffic, the PR it has generated in the last 6 months and it has the first-mover advantage that no web developper can develop.
- Incentives to the peers: I am writting this comment without much incentive… yet, I am writting this comment. Same for the diggers…

Sure, web 2.0 might not be as big as many pretend it will be. But it is not worthless either. We’ll see some adjustments in the coming months but the concept will stay.