Hey, Teena.
Teena Ashar wrote:... the API compatible for LinkedIn Social Networking site is not available in the "Developer's guide to Social Programming" Book. Any specific reason for the same? Appreciate your response.
I think the short answer is really that you can't cover everything. However, since LinkedIn is an OpenSocial container the principles you'll pick up in the section on Google Friend Connect is mostly compatible with LinkedIn. This is also true of sites like Bebo and Ning (for as long as they're around). Just so that you know,
any web site can make itself into an OpenSocial container so you're not restricted to platforms such as LinkedIn for development. Being versed in the APIs for OpenSocial will help you learn about the general functionalities of these containers and you can then look into features specific to LinkedIn, for example.
Does that help? In short, I couldn't cover everything but what I did cover will be a base upon which to build on and specialise in.