From the press release MSN Spaces Now Largest Blogging Service Worldwide we learn

REDMOND, Wash. — May 24, 2006 — MSN^® Spaces is the most widely used blogging service worldwide with more than 100 million unique visitors, according to data released today 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.

MSN Spaces allows consumers to create personal Internet sites where they can express themselves in a variety of ways and interact with the important people in their life. The service provides people with a place to create and update a Web log, or blog, as well as share photos, music playlists and more. For example, more than 6 million photos are uploaded to the service each day, with more than 2.5 billion photos uploaded since MSN Spaces launched as a beta service in December 2004.

It's quite cool realize that I've been working on the MSN Windows Live communications services platform team for about a year and a half building the world's most popular blogging service and supporting the worlds most popular instant messaging client to boot. I guess since we haven't rolled out the social networking features of MSN Spaces across the entire site, we can't be called the world's most popular social networking service. Yet.

Thanks to all our users who keep using our services and giving us great feedback. You rock. We have lots of good stuff planned for y'all in the coming months.