Hearing this news makes Bitcoin that much more legitimate.
Having Microsoft, a company known for its money and its practices to obtain large amounts of it, accept Bitcoin will affect its value in a big way. Or at least one would believe.
I kind of wish I bought Bitcoins when I heard about it a year or so ago (just like I wish I invested in Facebook). I did read an article explaining Bitcoin. Parts of it made sense, but other parts still left me confused. I wouldn't say that should deter anyone. As many things out there that we want or have, the results of the product is sometimes more important than its inner-workings.