Innerglow in WPF using Expression blend and xaml

WPF doesn't have support for Inner glow by default.This is an important feature in rich user interface designs.So to implement Innerglow in our application we have to workaroud the issue.Here you can find one good workaround by a Microsoft employee.
http://blogs.msdn.com/msmossyblog/archive/2008/09/15/how-to-make-innerglows-with-expression-blend.aspx

Remember the BitmapEffects in WPF are very costly