Notice the addresses and compare:
http://outfoxingkarlrove.files.wordpress.com/2008/12/birth_certificate_5.jpg
http://www.chicagotribune.com/media/photo/2008-12/barack-obama-birth-certificate_43705180.jpg
151—1961 010641
Number not covered:
http://bigbrassblog.com/media/6/20090722-certif2_factcheck.jpg
HI birth Cert issued Dec 1967
http://freepages.genealogy.rootsweb.ancestry.com/~sprin/document/gomes/bmarg.jpg