Sub domains and 302 redirects

What does Google record for these?

[bpresent]

A few threads from over a year or so ago said that sub domains were uncool and that the likes of INK had a bad taste in their mouths around them.

I'm talking about using them instead of sub-directories simply to make for shorter urls (eg. sales.mysite.net instead of mysite.net/code/date_stamped_directory_name/sales.php)

In a more recent thread [webmasterworld.com] marcs states that they are okay so long as you don't have duplicate content.

I guess this means you tell the bots to ignore mysite.net/code/date_stamped_directory_name/sales.php.

Are they okay with Google and is that the thing to do with them?

On a related topic... and perhaps a nice alternative to sub domains, is it cool to have a redirection in my .htaccess such that when the user (or the bot) types in mysite.net/sales they get a 302 to mysite.net/code/date_stamped_directory_name/sales.php?

I know this will work but my question is: what do Google (and other SEs if you know) record in their databases if I do this redirection? mysite.net/sales or the real location.

I guess I should paraphrase this with "I want Google to record short urls for my key pages".