One of the coolest things is the interoperability between different technologies. Thanks to the API provideded by these technologies. This indeed is no different from what happens inside your computer. Threads/processes co-operate with each other to acconplish a task. Or, how different commands in UNIX work with each other in a pipeline ( which specifically becomes a simplex operation ) or in some other way to accomplish a goal. So, what happens at a macro level is very much similar to what happens at micro level. Advocates being, atom and universe, computer and internet.
(This was my first post to posterous, thought of putting it on wordpress. This is the original post.)