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What is so appealing to me about Arch Linux is, not only its speed, but its "easy to get your hands around" package system and PKGBUILD system. Matter of fact, I like it so much that it now powers our corporate proxy server, a high-traffic SMTP server in our office and a intranet blog server.
If it wasn't for the friggin' power outages we've had, those servers would have been running over 300+ days, easy.
Overall, one bad a$$ distro.