MSN Spaces is the most widely used blogging service worldwide with more than 100 million unique visitors, according to data released by comScore Networks Inc. of Reston, Va., an independent Internet audience measurement and consulting company.

comScore World Metrix’s proprietary audience report for April 2006 showed the total number of unique visitors to MSN Spaces has more than doubled in the past 12 months, from 41.65 million to 101 million. Figures compiled by comScore Media Metrix indicate that during April 2006, nearly one in seven Internet users worldwide had visited MSN Spaces.