An advertiser on DailyBitcoins.org is offering "Earn 0.1 BTC for making forum post", and contact chromaticcreative@gmail.com

When I contacted them, I got the following email:
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From: Casper Cehng Tsz Chun <caspercat1997@gmail.com>

Greetings!

Thanks for showing your interest to our offer. This offer is for whoever owns a BitcoinTalk account. As we need to check if you are qualified for this event, you need to provide us a user ID of BitcoinTalk.
You can know your user ID by logging in to your account>profile>Additional information>Show General statistics for this member>Copy the URL. The user ID will be http://bitcointalk.org/.......u=<your user id>;...... .

Please copy your user id and go to http://chromaticcreative.net/bitcoin/mega/uid.php?u=<your user id>

Wish us a good partnership.

Casper

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It seems my forum user ID number is not something they need for legitimate purposes, and this might be a type of phishing (obtaining private information by social engineering).  I would like to hear from forum experts what you think.

In economics, "Velocity" is the number of times a currency is used per year.  It's total transactions in an economy divided by the money supply.  For example, if the United States GDP is $15 trillion, and the money supply is $2 trillion, then the velocity is 7.5 per year.

My question is has anyone calculated or charted the bitcoin velocity?  I think it could be found by summing the transactions in blocks, but that might be a naive assumption.

Why it might be interesting is as a measure of "are people spending or sitting on coins?" relative to other currencies.

EDIT: I found bitcoinwatch.com, and it shows 538,000 coins sent in the last 24 hours, which implies a velocity of 29 per year.  What is not obvious is how many of those coins were simply moving from one account to another of the same owner, which would not be an "economic transaction", any more than pulling cash from an ATM against your checking account is.