Creating an appealing app is just the beginning. Once your app is accepted and available to the public, you should execute different marketing strategies to increase its exposure. Perhaps the simplest practice is to include the Download for Windows Phone 7 button as well as a link to your App details page. If a user has these two items easily at their disposal, you increase the chances of selling your app.
As stated earlier, offering a trial version of your app will make it much more marketable. If you have a paid app and only offer screenshots, a user may not feel compelled to invest in it. Having a trial version means that they can get a real taste of your app in action.
Microsoft may deem your app as worthy of being featured on its sites. If so, consider yourself lucky. Also, pat yourself on the back for creating a marketable app. Now, if your app does not get selected, there are still other things you can do to up its presence and popularity.
Use social networking to your advantage. It's as popular as ever, and a great promotional avenue. You can also create blog posts about your app. Just be sure to include the Download for Windows Phone 7 button and a link to the App details page. You can also kick things up a notch by offering a video preview of your app. YouTube is a great site to promote your app through video.
The aforementioned were just some tips on how to create and market a Windows Phone application. Use these tips and build on them to make your app the best it can be.