Well this is one of the best timewasters i've ever found.
If, like me, you enjoy safaris and animal spotting in general, this is about as close as you can get whilst still being at your computer.
Basically, through various wildlife camera traps, conservationists have gathered around 3 millions pictures of animals taken over three years. But they don't have enough time to work through them and identify the animals in them, and where they were spotted etc.
So they posted tham all online, and people can go through them and tag them, essentially building up a database of locations of animals in the Serengeti.
Apparently each picture gets sent to five participants, and if there is any disagreement between them, it gets sent to an expert, so don't worry about getting it wrong.
It's incredibly satifying clicking through and spotting rarer animals, even if 90% of them will be Gazelle and Wildebeest. (And empty pictures of moving grass). I've seen lions, a giraffe and even a hyena and a couple of hares.
Anywho, i've already wasted about an hour doing it, anyone else who finds it fun should check it out.