Here is a sneak preview of the Windows Phone 7 demo we're working on. It is a Twitter client following the Windows Phone 7 UX design guidelines, and we plan to include some nice features such as geolocated tweets and push updates...

This blog post will tell you how I to create back button or "undo" functionality in a rich UI application. I've used the Twitter Silverlight Application to demonstrate this but it can be used in quite a few scenarios such as graphic packages or data modelling software where you require the ability to go back and tweak changes.

The term particle effects describes a computer animation technique where many small particles are combined to create realistic special effects that would otherwise be difficult to achieve using standard animation techniques. Typical examples of the visual effects that are achieved with this approach include: fire, water, smoke, fog, snow and sparkles. In this post we look at a simple implementation of a particle system in Silverlight and use it to create a realistic smoke effect.