To all who believe that Microsoft's avatars are rip offs of Miis:
Actually, if there is anyone guilty of ripping anyone off here it is Nintendo. Anyone who has ever used MSN messenger (back when it was actually called that rather than Windows Live Messenger) should be familiar with the several types of customisable avatars available for that. Pretty much all of these were roughly as sophisticated as Miis, just without the 3D graphics and integration into games.
Here comes the killer, especially for those of you who think it is in some way naive or idiotic to defend Microsoft on this one. The 3rd party avatar that was endorsed by Microsoft for MSN Messenger was called the 'Wee Mee'. This was before the gamecube was even released, let alone the Wii. Now, I'm sure most people have already figured out where I'm going with this, but just to spell it out, replace the letter 'e' with the letter 'i' and you have Nintendo's oh so original 'Wii Miis'.
It's pretty short-sighted to call any kind of avatar system a rip off of another, I mean you may as well say that one clothing manufacturer is a rip off of another. They all allow for an expression of individuality, but that system is interpreted and produced differently from one creative outlet to another. However, if people are going to lay into MS for ripping off Nintendo, just remember that Nintendo couldn't even really be bothered to change the name.
On the subject of Home, I like the idea, it seems like a very unneccessary luxury but a luxury nonetheless. When it comes down to it, NXE is about providing a community of avatars integrated within a system focused on online play, and Home is the same idea but based around a glorified lobby system and with the ability to go online shopping 'in person' if that makes any sense. Both are valid approaches, they're just different from each other. As for Miis, well, they don't really fit into this argument in any way other than the blinkered use of them to bash MS, as the Wii really doesn't have IMO a worthwhile online service. It's just too limited, only a handful of games have fully fledged online play, and if I want to see a weather forecast I'll use that crazy tv service that I pay a monthly fee for.