Spending a ton on addition of new features, API's, Widgets, Exclusive design does not mean you are enabling your site for more users/revenue.
Lately we have seen many sites with much unwanted, unrealistic features that has pretty nothing to do with the business model. Surprisingly even bigger organizations fail to use Social components in a beneficial way.
As more & more Entrepreneurs, shareholders are becoming aware of need for Web 2.0 it's also time for them to understand their niche requirements & not clone "somedomain".
The art is how these social components are applied to business strategy. A clear, consistent planning of Web-specific objectives those integrate with the organization's overall goals. Applying social modules is not just website development rather it is innovating new set of ideas for better sales, services, support etc. The "Customer/Visitor Sense" is the key to innovation for a Web 2.0 feature rich site, not technology.

• Keep main business stream as the focus & social components around it if your purpose is anything apart from a community portal.
• Plan Social components as the main stream & other elements around it if your focus is building a community site.
• No matter how talented your programmers are make a point to brief the business requirements at all stages.
• Plan backend to track individual customer stats & information, rather then bulk visitors stats.
• Create maximum "Touch Points" in sync with the social components for visitors to provide their email address to seek more information, offers & discounts.
• Keep it Simple- Have a clean styled CSS, CMS based exclusive design which suits your business purpose. Web 2.0 does not mean complex or heavy design. (check our Designs)
• Use mini widgets for providing complete details of your product/services on home page.
• Open Platforms with provision for adding new/third-party API's.
• E-commerce section to have social components to guide & advice customers.
• A complete framework that is loosely coupled with modules for quick changes – "Web development is ever changing" There's a world of ideas for Web 2.0 sites and unlimited potential. (check our Demo)