[quote name='Caffeinefree']I have 40 codes of assorted value. (Most bottle, some 12-pack) Looking for Halo Reach Anniversary Map Code trade or MSP. I could also do something else if the price is right. PM me if interested.
Also, I'm kinda new at this. What's the basic etiquette for this thread?[/QUOTE]
It's laid back. Don't be a leech from everybody else without trying to contribute to the general betterment of the thread, but there's nothing wrong with saying something to the effect of what you already have ("I have X, and I'd be obliged to get Y for it, if possible.")
It's not even verboten to ask for a code now and again if you're really desperate (sometimes a certain deal is just less than the number of points you've got, and hesitation will cost you), but again: don't make a habit of it, especially if you aren't trying to help others by supplying information on promotions, bonus points, etc. The thread is all about sharing openly available information so that everyone can capitalize on the points they have.
So long as you're not simply a leech, you'll be fine and welcome here, I'd say.