A while ago, Ian Walker started a series of posts aimed to help you build a marketing strategy for your WP7 apps. It's a good read, so don't miss it.
Source: Ian's Blog
This is an on-going list of links relevant to independent developers looking at marketing their own Apps. (I’m seeking useful feedback and criticism on all these short posts please. The end result will form a part of Mike Ormond’s’ forthcoming WP7 Kindle Book).
Ian Walker gives some tips on how to reduce the negative feedback for your WP7 app.
Source: Ian Walker's Blog
I’ve seen this happen a number of times, both to my own apps and to others and there is nothing quite so frustrating – you spend months developing and testing your apps and finally have a version 1.0 ready for release – you pass ingestion and await the rewards with anticipation! Next thing you check out your App in the Zune marketplace and .. horror of horrors .. someone has given you a low rating and negative comment! What’s worse is that you know that their comment has its roots in something unfounded ...
I am developing most of my WP7 apps in Silverlight 3, then doing whatever porting is necessary to get them running on WP7 (the final stage is then optimising for WP7, but that’s another story). ‘Nuke Your Office’ (http://apps.webservicesuk.com/NukeYourOffice) has a lot going on sound-wise (multiple WMA files fired at random and in parallel). All was fine in SL3 but when I moved to WP7 I realised that I had an issue with performance. I recalled reading something about being able to use XNA functionality for playing sounds within Silverlight/WP7 - A little searching later and I came across the “Physics helper Library” that already contained just the functionality I was looking for.