In another long list of things that can go wrong, last night Twitter changed their OAuth decompression method, affecting how 3rd party Twitter clients interface with the site. As reported by WPCentral, Scott Peterson, the developer of the Twitter app glƏƏk! has said:
”…any Silverlight Mobile Windows Phone client that uses the non-PIN authentication, and doesn’t not expect a GZip response.”
All Twitter apps will need to make slight changes and then re-submit, which could take anywhere between 3 to 5 days for the fixes to appear in the marketplace. Of course, the problem is only with creating initial accounts from the phone. Using these clients shouldn’t be affected, so you could always use the site to create your account and then enjoy Twitter on your phone.