It's extremely clear that Twitter is turning its back on the developer community who helped the company reach success. We were the first adopters of Twitter, encouraged our friends to join, and made it mainstream. Now, when we want to build apps on their platform, Twitter tells us they're closed - that they don't want to return the favor.<p>So, yeah, I can see how Flattr, a service that revolves completely around a community of people who actually appreciate others for their work, is upset at the company whose notion of "thanks" is a Cease and Desist.<p>As developers, we should be alarmed - we shouldn't be blaming people for 'not reading the terms of service' or saying that 'Twitter has the right to do what it wants'. These answers might be technically right, but they don't capture the true feeling of what is right, which is that developers should build apps that enhance Twitter's ecosystem.<p>So, that's it for Twitter for me. I only expect Twitter to get worse about their developer policies in the future, and I don't want to be a part of a community that treats developers poorly.