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![Stackathlon 2.5: Leader board for users active on multiple sites](https://cdn.statically.io/img/i.sstatic.net/CnIsF.png)
Stackathlon 2.5: Leader board for users active on multiple sites
It's surprising how few people are active on multiple Stack Exchange sites. Well, maybe not so surprising. But it's a big world; you'd think there'd be more. When I first created Stackathlon, there…