Microsoft has their own tagging service called Microsoft Tag. At first glance, it looks just like any other QR code reader/creator. But on this page, it seems as if it has much greater “out-of-focus” scanning. This has been my problem thus far with QR codes. No two camera phones are alike, and each seems to take photos at different qualities. I would end up with a blurry, grainy photo that wouldn’t scan. This may solve that.
A couple potential issues:

Looks like it has to be in color. What infrastructure changes would …

Apture is a pretty cool little script that you can install on your blog that allows you to link text to rich media elsewhere on the web. I haven’t played around with it a ton, but it seems to work well. From their website:
Apture provides the first rich communication platform that allows people to intuitively experience the web.
With just one line of code, publishers and bloggers can quickly and easily turn flat pages of text into a compelling multimedia experience. Apture gives content creators the power to find and incorporate …