Buy $70 worth and get $10 back
Well as the article suggests, Microsoft is trying to sweeten the deal by having you buy all the summer Xbox Live Arcade releases totaling 70 bucks. Then they will give you back 10 dollars worth of Microsoft points, anyone who goes for this deal is getting ripped off.
Think about it, August is the month we spend our money on last minute stuff for school. $70 goes a long way there and for them to say we'll give you $10 bucks back makes no economical sense in terms of value. I have a hard time believing a good amount of people would want all those games in the pack, so basically if you spend early you get a game you didn't really care about.
If Microsoft can haggle like this, how about for one week they take all those summer hits and drop them all to 800 points. That's probably millions of dollars in PROFIT they will make in that week, but assuring us we'll get a game we likely don't want for free doesn't make me want to go for this deal.