With Mass Effect 3 right around the corner, there is sure to be some spoilers floating about. Feel free to discuss them, but all that's asked of you is that you use a [SPOILER] tag in your thread title to warn those who do not want to have their experience ruined for them.
Also be mindful, if you intentionally post spoilers for the sole intent of being malicious, you will earn a trip to bantown, which isn't nice this time of year, the weather is horrible, rains constantly, etc.
TL;DR version : Spoiler tags. Use them. Because, imagine how you would feel if I spoiled something right now without a spoiler tag like Shepard doesn't wear socks. Yep. Not too fun is it? So don't do it, and be nice to your fellow forum goers.