Google has just announced the new Android Market web store, where you'll be able to browse the entire Android Market and download or purchase apps to be immediately sent to your Android device. It's a similar browsing experience to the iTunes store, only you do not have to sync your phone to get the apps on there. The power of the cloud is at its best here. Paid apps can be purchased using the credit card stored onto your Google account. 

If you go into your My Account page, you can see all past orders and even choose to install them on additional devices. Your settings can be edited here as well.

The Android Market Web Store is already live and available for use at market.android.com.