The holiday crush is on and the clock is ticking. But what do you get the geek or coworker in your life who has (or wants) everything? How about something intangible: a web-service subscription.
Over the last few years, as I have moved more of my life into "the cloud," I have started to rely on a handful of such services. They keep me in sync, in the know and in touch. Here are three that passed my "30-day test."

Last year I gave a couple of Flickr subscriptions and they loved them.