Birdsong, a popular twitter client on iOS, has announced their retirement from the Windows Phone App Store.
Their decision was based in part on Twitterâ€™s restrictions on the number of tokens developers can have, and on their waning popularity.
By itself the news is not noteworthy, but StreetInsider seems to credit it with a 1.3% drop in Microsoftâ€™s share price, noting
Top App Developer Says Microsoft’s (MSFT) Windows Phone Marketplace ‘Hasn’t Proven Itself Viable’
The news actually carriers a very different message for developers â€“ if you do not market your app, it will be forgotten â€“ we all know about Rowi and Tweetro and other twitter clients who get their name onto the blogs â€“ posting a press release two years ago will just not do the trick.
With more than 20 million Windows Phones now in the market, the Windows Phone Store has never been more viable â€“ but with more than 120,000 apps in the store it has never been more necessary to promote your apps properly, even if you have a reputation on the other app stores already.