links for 2009-10-27

Some people online are trying to flout Dunbar's number, to become connected and actual friends with tens of thousands of people at once. And guess what? It doesn't scale. You might be able to stretch to 200 or 400, but no, you can't effectively engage at a tribal level with a thousand people.

'Social Business' denotes businesses organized around social ties and the use of social technologies to support them. This is intended to represent a break between companies (in general) organized prior to the rise of the social web.

The forecast assumes that Congress wont extend a tax credit for first-time home buyers that is due to end Nov. 30. That isnt a foregone conclusion as Congress is still debating that issue.

An end to the tax credit and an expected increase in foreclosed homes available for sale will place additional downward pressure on house prices this winter, First American said.