Last year, I wrote about an idea I had for how browsers should be able to link to specific chunks of text on a page, whether or not there were any anchor tags there. Brian Donovan had the same idea, but went a (big) step further: He developed a way to do just that with Mozilla and a bit of JavaScript. I'm not sure if it's something worth looking into for day-to-day applicability, because the code has to be on the page. But it might have some good applications. And it's pretty neat.