Folgende E-Mail erreichte uns gerade:

Dear Jan, We have been informed that Twitter has blocked the url shortener Tiny.ly from their site. If you are using this shortener to promote your link, please discontinue at this time. I have found that www.goo.gl and www.is.gd seem to be working well for the xxx link. Another way to promote your link would be to simply create a flow through sales page on your own blog or site then link from Twitter to your page. Once the visitor comes to your site, you can then promo xxx from there. Thanks again! Sincerely

Fazit: Bei wichtigen Projekten und Links empfiehlt sich immer eine unabhängige Lösung.