Actually, not. But it is different from a Certification of Live Birth, a purported image of which was posted by the Obama campaign organization to the daily KOS and their own website.
It's most likely a forgery, but even taken at face value, it doesn't prove Obama is a natural born citizen. In fact if one assumes that BHO Sr was a subject of the UK, then taking the CoLB at face value proved that BHO is not a natural born citizen. Native born, but not natural born.
That of course assumes the CoLB is legit.
A “Certification of Live Birth” is a short form birth certificate. The information included in the document may differ from state to state.
A “Certificate of Live Birth,” is the long form birth certificate and contains more detailed information, including signatures of doctor(s), witnesses, vital statistics (length and weight), etc.
Frankly without a court of competent jurisdiction resolving the issue or stating it is a forgery ... they can continue to stonewall till the end of time and as such others opinions do not matter. Except at the ballot box.