Interesting numbers, though the site started back in 2006.
What we have here is unique, and that's something everyone can be proud of.
Talking with other bloggers and website hosts I know how costly running a site can be. Advertising helps, I know, but my experience with that on Brian in Jeollanam-do
has shown me how little blogging pays. I can't think of any other job I'd in which I'd be happy to earn $0.75 for six hours' work.
I, for one, vote against bringing in job ads, at least in the ways I've seen them elsewhere. This site is unique in that it's teacher-created, teacher-run. I remember back in the day we weren't getting a lick of support or endorsement from even the Jeollanam-do Office of Education. I would hate to compromise that effort with advertisements from recruiters who aren't a part of this process. There might be a way to make them work for us, rather than us for them, and have them on the site in an unobtrusive way, but that requires more thought.
There are other advertising options to consider, and I'll look into the ones I know from my experience with the Korean internet.
We might also think about a PayPal tip jar, or something, but I wouldn't want people to feel compelled to pay for the content they helped create in the first place. I just hate you having to put all your own money into the site.