Now I see alot of users going crazy over them enabling invites again but I don't see anyone telling the whole truth. Invites are only enabled until Monday then if you haven't used them they are taking them away again. So my advice is don't go giving all your hard earned acct up in a trade right away. Wait until sunday night and see how many are up for trade then. You will get a MUCH better deal.
Paste from homepage
Anyone at least a power user has been given 1 invite. This must be used by the end of the weekend - which by the way is 3 days - as at this point, the invites will be removed, along with any pending requests.... But the new invite scheme will be launched - more on that soon!
I am also disappointed to see almost no one giving the invite away. I in fact gave mine away and I encourage others to do the same.