BUT when you just throw it up on the wall, you have no idea if anyone read it. And chances are, most of them didn't (didn't check in regularly enough, or they did check in, but your post wasn't one of the top 10 that was put on their page, etc).
Are you sure? When I login I seem to see 5-10 posts from a list of 100 people (well, admittedly less since I've ignored so many). I you were my friend, how could you know _you_ were in that 5-10 posts that _I_ see -- you don't know how many other friends I have, and how much _they_ have posted.
So did you really tell anyone?