Nielsen Online made a quick comparison of some of the main features of Microsoft & Yahoo services — “Unique audience includes anyone who visited the site at least once during the month, and anyone who visited the site more than once was not counted again.”

The purpose of this little exercise was not to show trends, or make comparisons to other sites/properties, but just to get a bit of a handle on where the two companies sit in relation to each other, and what a potential joining of forces might mean.

For clarity, here's the February raw numbers, supplied by Nielsen:

Source:→ Liveside

Microsoft, Yahoo!, Web Service, Comparision, Web Stats