For those that are unaware, you may be asking “What’s a Windows Live ID?” Essentially, they are accounts that you can use for almost every service offered by Microsoft, including Xbox LIVE, the .NET Messenger Service, the Zune Marketplace, the Microsoft Developer Network, and Microsoft TechNet. I would guess that most people who signed up for a Windows Live ID did so because they wanted to sign up for Xbox LIVE (like myself). Back when I signed up for Xbox LIVE though, it was called a .NET Passport instead, so if that rings any bells for you, know that it is the same thing.
I suppose I should be fair and say the idea behind Windows Live IDs is not bad. In today’s day and age it can be difficult to keep track of the pile of usernames and passwords the average internet-savvy person will acquire. Trying to condense them into one account for any Microsoft related service makes it easier on the user, and that is always a good thing. The problem with the Windows Live ID system is the way it has been mismanaged by Microsoft.