...my two favourite web services:

• PhotoJoJo's Time Capsule, which emails me monthly with a few (random) pictures from my Flickr, but a year ago. I really look forward to these little enforced walks down memory lane.
• Doodle, a beautifully simple meeting-arranger/decision-marker app. No sign-up, no frills, no advertising, but does what it does to perfection.