What's the point in adding a hundred or so people you don't know just for the hell of it? I never have and likely never will understand that, maybe I shouldn't criticize people who do that, but on the other hand it's rather pointless, wouldn't you say? The only thing that happens in the end is you make yourself look popular, except anyone taking a critical eye to that kind of case would not believe it and would see right through this anyway.
It's not exactly hard to find, usually a service like S3 will be something like "s3.amazon.com" or "amazon.com/s3" but there you go and if both fail, there's always Google.
Facebook theoretically CAN be used for productivity (work connections for example) but it's going to take some time before it ever is, and for that matter why would you EVER consider an online network to be any kind of Operating System? Why would you use Facebook for work?