The fastest and easiest way is to use the Twitter API Twitter. This will force the user to leave the page, but allow them to change the tweets as they like. You might be able to make this a little cleaner by inserting a WebBrowser element into your form and making it visible when reading.
Here is the code I'm using:
public class ShareTwitter {
I have similar classes for Facebook, ReadItLater and email for Windows Phone - let me know if you are also interested in this.
Aussienick
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