Andy Baio, writing for Wired:

Yahoo's lawsuit against Facebook is an insult to the talented engineers who filed patents with the understanding they wouldn't be used for evil. Betraying that trust won't be forgotten, but I doubt it matters anymore. Nobody I know wants to work for a company like that. I'm embarrassed by the patents I filed, but I've learned from my mistake. I'll never file a software patent again, and I urge you to do the same. For years, Yahoo was mostly harmless. Management foibles and executive shuffles only hurt shareholders and employee morale. But in the last few years, the company's incompetence has begun to hurt the rest of us. First, with the wholesale destruction of internet history, and now by attacking younger, smarter companies. Yahoo tried and failed, over and over again, to build a social network that people would love and use. Unable to innovate, Yahoo is falling back to the last resort of a desperate, dying company: litigation as a business model. Yahoo is now a patent troll. This fact makes my worry about the future of Flickr grow greater still.