I like how you ask for data to verify it (which is totally valid) and then make a definitive statement (or options). Yahoo could definitely be #3 in active use, just like AOL still has tons of users and XP has a large install base. I know of many small businesses that use Yahoo for stores and web hosting (though it is generally an awful experience) because they have business processes around them, and changing those processes is hard and expensive.
Almost nothing wrong with Windows XP, which is more than can be said for the current version of Windows.
On the other hand I am not sure that Yahoo is particularly awful - I use it as a garbage account for trashy site registering, and my father uses it for his main email for which it works perfectly well.
Better than this hideous new interface hotmail has foisted on me, and which is the main reason I am actually going to make the switch to Gmail.
