FYI, I use the sponsored version of the Eudora 5.1 email client. A new button has appeared on Eudora showing a magnifying glass and the word "Web". This leads to a Lycos page with a search box and a text menu of various Lycos services.
I also notice a lot of Lycos banners now running on Eudora.
I found this on the Eudora website: "Already, there are nearly 1,000,000 active users of Eudora in Sponsored mode,..."
I'm sure this is out of date and the numbers are higher now. But there is also the paid version without ads so that would add to the numbers. I'm not sure if the numbers quoted above are worldwide or only for N. America. Those numbers are pretty small beer compared to Outlook. Still it probably is a distant second to Outlook in the USA.
The sponsored version is full featured and just has a 125x125 banner in the lower left corner -- otherwise it is completely free to download and use.
Looks like Lycos did a major banner purchase -- about every 3rd banner is theirs. I hope this means that Lycos will continue to court new users and try to expand their market share. I think that would be benefical for everyone.