Tell us what file archiver you use, we'll tell you who you are:

=== Mainstream ===
 * .zip -- Conformist who runs Windows because everyone else does
 * .dmg -- Conformist who would **not** run Windows
 * .exe -- Idiot who thinks that creating self-extracting archives is a great idea
 * .rar -- Lame pirate who tries to compress MPEG video
 * .rar, .r00, .r01... -- Complete [[http://en.wikipedia.org/wiki/Lamer | Lamer]]
 * .7z -- Non-mainstream user of a mainstream OS


=== Old Skool ===
 * .lzh -- MS-DOS or FidoNET, should probably stop playing with computers
 * .arj -- Lame FidoNET-era user
 * .lha -- Conservative Amiga user
 * .lzx -- Progressive Amiga user
 * .xpk -- Advanced Amiga user


=== UN*X family ===
 * .tar.gz -- GNU-aware user
 * .tar.bz2 -- Modern UNIX OS, usually GNU/Linux
 * .tar.Z -- Traditional UNIX die-hard
 * .cpio -- Solaris user or someone stuck with an old SVR4 UNIX
 * .tar -- Lazy user who wastes bits recklessly
 * .tar.lzma -- Compression freak
 * .tar.xz -- Up-to-date compression freak

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Copyright 2009 Bernie Innocenti -- it's a wiki, feel free to add your humor too