What to do with an expository note Mostly for fun, I've been working on an exposition about some ideas in my area of math (algebraic geometry).  As far as I know there isn't any elementary introduction to this particular topic already out there. It's at an early undergrad level.  I'd like to make it available, but I'm just not sure how best to proceed.

What are my options for disseminating it, and what are the pros/cons of each?  I'm especially interested in what sorts of articles are suitable expository journals, vs what usually lands on a math blog.  (I could also just put it on my site, but I hope someone and than my own students (and my parents) will actually read it.)

Other relevant info: I'm currently a postdoc at a research-intensive place.  I'd like to be competitive for teaching jobs at good liberal arts colleges when I'm done in a couple years -- if any of these options would help with that, it's a point in favor.
(Upon jakebeal's request:)

Seconding @Kimball's recommendation, the "Monthly" (for all its problems...) is seen by undergrads, and also "College M.J.". Small consolation, but, indeed, it's hard to reach people who don't know the keyword to "google-upon". Conceivably, your enveloping HTML page could include more-naive keywords, or even nearly-hype-ish keywords, hubris-acknowledged, that would give g-hits.