I thought Spore wasn't directly online. I thought the only thing it did online was make it so your world is filled with the creations of others. Like just their creatures, not them directly playing with you.
Here are some excerpts from 1Up's preview of the game:
"...Spore Creatures, as the name makes clear, focuses entirely on the PC version's 'creature phase'...Oh yeah, there's a story, too, which goes something like this: You and your good pal Oogie are two primordial creatures who, at the game's start, climb out of the ooze for the first time -- only to have your friend abducted by a spaceship. You must follow the debris that the spaceship keeps dropping, over 12 different levels and six planets, in order to rescue your friend. That's the plot, but one of the cool things about Spore Creatures is that it's up to you whether to follow it or not. You can choose instead to do side quests, do mini-games to unlock skills, collect the 280 or so different parts, or work on earning the game's 60 badges, which you can use to do such things as buy body parts you don't feel like hunting down, or unlock cheat codes. Do we want this? Maybe not as much as the PC game. But it's Spore for the road. So, yeah. We played. We liked. We want."