Sales 2.0 to most people I think means simply using Web 2.0 tools such as Google and SEO, Social Media, Inbound Marketing and etc. to help you sell. However, I think that there is a much larger revolution going on in selling these days that is driven by the environment, the stagnant but also changing economy, by the internet and just generally by people's feeling of empowerment in the information economy. I have been seeing a lot of things point to this recently and have started a blog to talk about it at www.virtualsales.blogspot.com
For example, the economy, reduced budgets, higher travel costs and a drive towards being green, has drastically reduced the amount of travel we salespeople do, are expected to do and are allowed to do. In order to adapt we must utilize Web 2.0 tools to help us continue to build relationships, educate our target audience and add value to our customers without regularly being in front of them.
Also, since emergence of the Web and now even more so with Web 2.0, people feel empowered to take control of their own lives and enabled to research and manage many more things that they once outsourced to professionals like lawyers, stockbrokers and accountants. In this world, the saleseperson has to learn to embrace an educated public, learn to engage in this ongoing discussion as opposed to trying to leverage a lack of information. A great example here would be looking up the price of a car on a site like Edmund's before going into a negotiating with a dealer or owner. In this case the seller has to differentiate and add value through service or value added extras or knowledge as opposed to just on a lack of information.
So, given these two major changes in the environment of sales, I think people will absolutely have to adapt to be more focused on adding value, being knowledgeable, embracing the new web of information and being able to communicate and build relationships in a virtual world.