I made something similar except you can practice using any Gist you want. http://newtonapple.github.com/Gistype/#1 It still needs some work on the current cursor movement for longer Gists, but the basic functionality is there. No login required, just type. :) Note that if you have Vimium installed, you'll have to put the URL on your "excluded URLs" list.
Does anyone know how this actually works? From their website: "Unlike other conversion tracking solutions available to app developers, Tapstream doesn't rely on mobile ad networks, cookies or UDIDs. Instead, we fingerprint your web visitors with our tasty secret sauce to match them up with conversions that you define inside your app." This sounds a little fishy.
I ran into a similar problem with the Google Mobile AdSense animation on iOS Mobile Safari. Basically when you put an absolutely positioned element with higher z-index over the iframed ad, it'll trigger greyscale antialiasing. Here is a demo (see it in Mobile Safari): http://newtonapple.github.com/frontend_tidbits/mobile_safari...
I ain't gonna lie. I vomited a little when I first saw the new logo. The pixelated green is seizure inducing. Congrats TechCrunch, you've just topped the Gawker redesign. Keep up the good work.