The great thing about the blogosphere, though, is that one can acquire whuffie by rubbing up against someone, like Doc, who has megawhuffie, to start your own snowball a-rolling. Write a post about your own snowball, find a way to get Doc or Robert Scoble or Steve Rubel or BoingBoing to link to it, and watch the whuffie whuff. The great thing about the biggest bloggers is that they aren't selfish with their whuffie. They spread it far and wide and the good ideas catch on. You already know this if you've ever had the fortune of being linked to by one of the above guys and gals. Your traffic spikes. Now, whether or not your idea takes off after that spike depends on the quality of the idea.
But here's another thing - whenever people tell me "oh I don't want to blog, no-one will read it", I try to point out that they are missing the point IMHO. Write about what you know. It doesn't matter if you don't turn into an overnight A-list blogger. GOOGLE WILL FIND YOU. If you write a thoughtful post on belly-button fluff and, a year from now, someone is searching for information on belly-button fluff, they will probably find your post. AND YOUR WORK IS DONE. (By the way, a week from now this post will probably be the #1 google result for "belly-button fluff"... so come up with something else.)
I think of it like this - we all have knowledge about stuff we are passionate about. Keeping that knowledge inside your own little skull-tomb is about the most selfish thing you can do. Let it out. Give it life. Blog it. Maybe no-one will read it, but maybe someone will. And maybe that person will build on it and someone will build on their work and on and on until... you started a snowball.