So from the 6 posted their IMEI I've trimmed down their Serial Number, you guys might want to remove your IMEI number now.

maemoexperts
Serial Number 015476

pwannell
Serial Number 015297

nuknuk
Serial Number 015481

FC_
Serial Number 012679

douglas
Serial Number 008154

bbrindle
Serial Number 008477

FYI those want to find out the serial number,

The IMEI format is as follow (example only): 35007752-323751-3
The bit in bold is the N900's unique serial number.

First 8 digits = Type Allocation Code (device name + region etc.)
Last digit = Check Digit