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Submission + - Keep smiling, waste spammers' time with OpenBSD tools ( writes: When you're in the business of building the networks people need and the services they need to run on them, you may also be running a mail service. If you do, you will sooner or later need to deal with spam. This article is about how to waste spammers' time and have a good time while doing it, using the free tools OpenBSD offers to do your greylisting and greytrapping before any content filtering. It's fun and easy.

4-Billion-Pixel Panorama View From Curiosity Rover 101

SternisheFan points out that there is a great new panorama made from shots from the Curiosity Rover. "Sweep your gaze around Gale Crater on Mars, where NASA's Curiosity rover is currently exploring, with this 4-billion-pixel panorama stitched together from 295 images. ...The entire image stretches 90,000 by 45,000 pixels and uses pictures taken by the rover's two MastCams. The best way to enjoy it is to go into fullscreen mode and slowly soak up the scenery — from the distant high edges of the crater to the enormous and looming Mount Sharp, the rover's eventual destination."

Numeric stability is probably not all that important when you're guessing.