Introduction
The HyperlinkButton is a Silverlight control which acts as a hyperlink.
See also:
Button Controls Article
Button Article
ToggleButton Article
RepeatButton Article
Overview
Here is a little example showing how to use the HyperlinkButton:

XAML:
<UserControl x:Class="HyperlinkButton2.Page"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Width="300" Height="100">
<Canvas x:Name="LayoutRoot" Background="White">
<HyperlinkButton x:Name="hbtnTest" TargetName="_blank" Content="SilverlightShow" NavigateUri="http://www.silverlightshow.net" Canvas.Top="40" Canvas.Left="30"></HyperlinkButton>
</Canvas>
</UserControl>
The most important property of the HyperlinkButton is the NavigateUri. It gets or sets the URI to navigate when the button is clicked. It can be an absolute or a relative URI.
Another useful property is the TargetName. It determines the target window or frame where the URI, specified by NavigateUri will be opened. In our example it will open in a new window. For a list of available values visit:
http://msdn.microsoft.com/en-us/library/system.windows.controls.hyperlinkbutton.targetname(VS.95).aspx
If you want to see how you can attach to the Click event or use ClickMode property visit the Button Controls Article. These members are inherited from the ButtonBase class. The example there is with a Button but it is the same with a HyperlinkButton.
A cool new feature in the final release is that when you disable your HyperlinkButton (set the IsEnabled property to false) the cursor chnges from Hand (the default one for the HyperlinkButton) to Arrow. It's quite intuitive because when you are not able to click the Hand cursor could make an illusion that when you click somthing will happen. This feature didn't exist till the official release.
Conclusion
This article is just a brief description of the key features of the HyperlinkButton control. It targets the developer who has just started withthe new Silverlight 2 controls. Any comments are welcome.
Reference
http://msdn.microsoft.com/en-us/library/system.windows.controls.hyperlinkbutton(VS.95).aspx