If you've got an Android smartphone, you've also got a Google/Gmail account. After all, you can't easily set up the phone without one.
Gmail on an Android phone is pretty easy to use. But did you know that your Gmail/Google account also allows you to view your installed apps, and download new ones, direct from your PC instead of your phone? And it's really simple to use.
To start, head to http://market.android.com and log in with the same Google account that you use on your phone. You can now browse the full Android market. When you find an app that you want to install, just click the Install button and a command will instantly be sent to your phone to tell it to download and install the app. You don't even need to enter your phone number - Google knows it automatically.
The service is free to use, but remember that your phone will still use its own data connection to download your chosen apps once it has received the command to do so. So it won't save any of your data allowance. It is, though, a very convenient method of browsing the Android market.
Another useful feature of the Web-based market is that you can view details of all the apps that you've downloaded (from your phone or via the web) in the past, as shown in the screen shot below. However, this system also includes apps that you have since deleted from the phone and as yet I can't find a way to turn off that feature.