Wow, EA marketing is awful: I had no idea there was a more full-featured version of it in the wild.

its free online, so 2.5m isnt that amazing, but the game should sell very well when its released

Its not free! 10$ or 10 euros, if they can sell 2.5M of basically a fancy dress up game, i cant even begin to imagine how well the full game will sell (2.5 SOLD and lots more downloaded for free which only have 25% of the available parts, like that, 2.5 is A LOT, considering you can have something for free), also, quoting wikipedia:
"During Electronic Arts' E3 2008 presentation on July 14, 2008, Wright humorously noted that fans had done God's work at 38% efficiency by creating the same number of currently known species on Earth, 1,589,000, in about 18 days, compared to God's 7 days"

These 2.5 millions have to include the free trial downloads, because if they hadn't, there would be, say, 5 million trial downloads at the very least. That would amount to 7.5 million total Creature Creators, but the amount of creatures uploaded doesn't match. If there are between 2 and 3 million creatures uploaded, it's fair to expect 1 creature per person on average, given that a lot of people won't upload, and some will upload a lot (for example, I shared 9 creatures, and I did that in the first 2 days, and never booted the CC again)-

Not everybody is going to upload their creatures though.  The first couple of days the thing was out and there were about 800,000 creatures uploaded.  It has dropped of fairly steeply.  This game is gonna be fun though.

Someone doubted Spore was going to sell well?

NIce way to start advertising the game to its eventual release...... The game will probably retain 40% of those who tried the demo. Now at 2.5 million, forty percent is 1 million guaranteed sales on its first few weeks.....

The fact that it's on EA's Q1 report tells you that it is sold numbers of the full version, and does not include the free version.

The company also noted that the Spore Creature Creator has been picked up by 2.5 million users, and more than two million creatures have been uploaded into Sporepedia in six weeks.

Doesn't say sold to, and doesn't mention revenue. Even though they use the word sold for Battlefield in the same report. Could be careful corporate wording to include the freebie version, or simply less clear choice of words from whoever wrote the report.

Not sure what exactly you're trying to prove with this thread. Fairly certain everyone was already convinced Spore is going to be a market success.