While shopping apps for smartphones are dime-a-dozen, generally there's not much they can do other than, well, give you a list. If you asked us who would be first in line to improve that experience, Nintendo is not a company we'd name, but this patent application for a semi-interactive shopping experience on the DS handheld has us standing corrected.

Joining the unending parade of companies with some kind of app store is Amazon, which debuted the first app for the Kindle today — that app being Scrabble, which may have enough mainstream appeal to turn Amazon's app move into an instant success. But is it any good?

About a week ago, blogger Chuck Falzone started a campaign targeting Android users, asking them to spend at least $5 a week on apps. Why? Because people aren't buying them, so developers are making only a fraction of the money that iPhone developers earn. What does this teach us about Android apps?

Some people organize their iPhone apps by function, others by category, and I'm sure there are a few who just leave them in the order they downloaded them. Allison McCarthy? She arranges by color. The result is this great image of her four home screens, arranged end to end in a fantastic app rainbow. See it full-size in the gallery below.