Yahoo! has an interesting feature hidden away in the bowels of the site. It’s called Yahoo! Pipes. You can create custom feeds using a variety of sources.
I know. That explanation was worthless.
What I wanted to do was see any lenses for sale for my camera (Canon 300D) on both eBay and Craigslist. I tried to filter out the worthless crap that’s often listed alongside ‘real’ lenses.
Here’s what you get.
If you’re interested, here’s how I did it.
I’m not sure what the real utility of this is, but life’s a learning experience.