Breakfast briefing: Facebook's patents and Palm's struggles

• Four years after first introducing the 'news feed' to its users, Facebook has patented the idea of a constantly updating stream of activities . But it's become the heart of many social networks in the meantime. Will Zuckerberg and co try to enforce their ownership of the idea? • It's been a while since we talked about Palm, and its ongoing struggle to reinvent itself - but given the fact that the company issued a profit warning yesterday , there may be a lot more to say on the subject. The company said that "driving broad consumer adoption of Palm products is taking longer than we anticipated"; the Wall Street Journal has a letter from boss Jon Rubinstein to employees . • And here's a little something to liven up your Friday afternoon: A series of little clickable puzzle games called Twitch . It's designed specifically for Google Chrome, so your mileage may vary on other browsers. And with that, enjoy your weekends. You can follow our links and commentary each day through Twitter ( @guardiantech , or our personal accounts ) or by watching our Delicious feed .