Microsoft Points are the 'currency' used across Microsoft's digital content distribution systems, such as Xbox Live Marketplace, Games for Windows - Live Marketplace, Windows Live Gallery and the online Zune stores. Once purchased, the points allow members to those services to acquire digital content of various sorts without the use of a credit card. This system was brought in to reduce the amount of credit card actions Microsoft would've had to deal with (which means paying small credit card transaction feed).
Obviously, it would be brilliant to get hold of some free Microsoft Points. Just think of all the 'free' things you could download for your Xbox or PC gaming experience.
But there's bad news...
THERE IS NO WAY TO GET HOLD OF ANY FREE MICROSOFT POINTS!
Sure, a quick search on search engines and sites like Youtube will claim to have sure fire ways of getting hold of some of these elusive points, and may even have convincing tutorials to go with them. But NONE of them should be believed. Nearly all of these will ask for e-mail address or passwords, and in some extreme cases, credit card details. These are simply scams devised to get a much personal information out of you as possible, which can then be used to target you as a victim of fraud.
So be lenient when you are trawling the net for any kind of offer of this kind. If it sounds too good to be true, it probably is.
All is not lost however, and Microsoft's Xbox Live Rewards scheme (found HERE) rewards users with various amounts of Microsoft Points for interacting with the services in certain ways, perhaps for buying a specific game etc. But they do also offer a small reward (very small you could say, at only about 25 Microsoft points) for taking part in quick surveys each month.
To summarize then, there is absolutely no way to acquire any free Microsoft Points from ANYWHERE, and you should stay clear of anything claiming to be legit, as it is just a scam to acquire your personal details. But there are ways to be rewarded for your use of the Microsoft services. You will have to put in a lot of effort to get a comparatively small amount back, but it's the only way to do it I'm afraid.