Twitter has just announced that it will set up a technology learning center for homeless San Francisco families called the "Twitter Neighborhood Nest." The company told the SF Chronicle that it will partner with the Compass Family Services non-profit organization, and donate north of $1 million over several years. It's currently looking for space near its home base on Market Street for the project and has already donated 81 computers along with tech support to Compass. Aided by Twitter employees who will donate their time, the center will teach students how to seek jobs online and other basic computer skills. However, as the Chronicle noted, Twitter's motivations aren't strictly altruistic.