Number of bitcoin users around the globe

[yocko06]

Does anyone have any idea how many bitcoin users there are?
If not what would the best way be to find out an average? I would like to see the user growth rate over the next few years if this is at all possible.

[Sword Smith]

Does anyone have any idea how many bitcoin users there are?
If not what would the best way be to find out an average? I would like to see the user growth rate over the next few years if this is at all possible.

Here you can see the number of unique adresses used every day:
http://blockchain.info/charts/n-unique-addresses

Some of this may be spam, though, i.e., just random transactions between wallets that are all owned by the same user. But about 50k different wallets are in use every day, it seems.

[yocko06]

Thanks. I looked at the blockchain.info and they have over 150000. users
It's just hard because there are so many different wallets all over the place, I think it may be a big job to find out a ruff number. It's probably a good thing to be able to see though for trying to bring merchants and others into using bitcoin.
 
 http://blockchain.info/charts/my-wallet-n-users