When you've written a really great post, sometimes it'll be picked up by a big website that features the best blogs on the web, and by linking back to your site, you're bound to get a HUGE increase in hits.
But will you be ready to harness those hits for the long term?
I was fortunate enough to be featured as one of the "Best of the Web" on "Comment is Free," the official blog of the British newspaper, The Guardian. It wasn't an amazing post (you can check it out here), but it was something that fit their bill for the day, and it sent a ton of visitors over to my other blog.
If you want to make the most of your big break when it comes, you've got to be ready for it beforehand. You want to make your new visitors "sticky" by providing them with content that they'll want to come back and see over and over again.
Make sure you've optimized your Adsense ads, and always keep a nice, clean, attractive blog. And no matter what, keep writing and improving your content, because great content is what will keep new viewers coming back "again, and again, and again," to quote the evil emperor Commodus from Gladiator.