If a tree falls in a forest

If a tree falls in a forest? The Wall Street Journal reports that Microsoft and Yahoo plan an alliance so that users of their instant-messaging services can communicate directly with each other.

Quote:

The expected linkup of Microsoft’s and Yahoo’s communications services would immediately challenge the leading instant-messaging market share of Time Warner Inc.’s America Online unit. AOL has a 56% market share world-wide, according to research firm Radicati Group Inc. It has long resisted letting users of other instant-messaging services connect with its own. A combined Yahoo and Microsoft could command 44% of the global instant-messaging market, according to Radicati.

A quick survey of some teenagers I know (certainly, not a scientific study) reveals that Yahoo and Microsoft have a combined market share of 0% of that key demographic segment.