Details about Windows Phone 7 have been sketchy so far – though developer tools and demo units have been out in the wild for some time, the lack of a final SDK and a clear understanding of how it’s all supposed to work have made it difficult to know what to expect. Well, prospective WP7 devs, it must be your birthday, because Microsoft just offered another peek behind the curtain with a series of videos from its Windows Phone Design Days. The seminar included an overview of WP7 development, personas, demo apps and more, including this lovely demo of a USGA golf score app. Below, a bit of YouTubery showing the USGA app in all its movery-flippery:

» Windows Phone Design Days videos (via Engadget)

One of the biggest drawbacks to Web apps on any mobile platform is the lack of a cohesive experience around finding and saving them — unlike iOS and Android, there is no “store” to go to, which means you’re pretty much on your own. Apple’s own list of Web apps is clunky and lacks many of the App Store’s features, and the only other real alternative is spinning the Google roulette wheel and taking your chances.

OpenAppMkt aims to change that, with a simple, store-like way of finding and saving Web apps for your iOS device. Though it’s still in beta and isn’t flush with the selection you’ll find at the major app storefronts, it’s exactly the right approach for bringing Web apps closer to par with their natively-coded cousins, including user reviews and the ability to charge for your apps. Though the site is currently optimized for iOS Web apps, there’s no good reason why this site (or a similar one) couldn’t offer Web apps in flavors for all the major smartphone platforms — after all, Web apps are still the closest thing we have to a “code once, run anywhere” solution for mobile apps.

» OpenAppMkt (via Daring Fireball, TechDirt)