Does anybody know if CGI textarea boxes do newlines msdos style or unix style?

Browsers tend to send both a carriage-return and a linefeed. I always do

    $text =~ s/\r//g;
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on whatever comes back from a text area. (Caveat: This might not be the right thing to do if you're on a Mac.)

Another common problem is to emit

    <textarea>
    stuff
    </textarea>
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instead of

    <textarea>stuff</textarea>
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The former adds newline on your behalf. The latter preserves the original text (except for newline conversion).