I dont think 2Goods that off though man, granted Facebook ended up pioneering newer/better/more dialed ideas of the business model but they still essentially cropped up with a variant of what MySpace had already offered so I see where he's coming from. Yes, their not identical...but they do/did have a ton of similarities, at least especially when Facebook first hit the scene before things like using their API for social bookmarking all over the net really occured, etc.
They basically took MySpace's status updates and injected them with sterioids...You still get a profile just like MySpace, you still share video and pics just like MySpace, etc...The genius on Facebook's part IMO is that they made things more personable for one thing, for example most of the time you find someone on Facebook you actually find them by their "real" name, not some pseudo alias, etc. Facebook lets you have whatever screen name you like but you still find people in a more personable way....and since they made status updates take the front stage essentially they made it easier and more accessible for people in your network to view that information immediately and very easily, whereas on MySpace you only had bulletins, that tiny text status update, or visiting another persons profile to really share a larger amount of content. Long story short, theres plenty of similarities.