You might not think of Lycos all that often, but apparently it is "the fifth most popular portal in the US, consistently ranked as a top 20 US Web property, with more than 6 million monthly unique visitors using LYCOS Network Search". It's a healthy chunk of business, and now Lycos says it is going to get its search results from Ask.com, instead of from Microsoft Live Search. Search Engine Watch has just posted the press release.
The switch is going to increase Ask's market share and decrease Microsoft's -- and Microsoft is already doing badly in the search market.
Comment: We recently interviewed Ask's CEO, Jim Lanzone. See: What happened after they killed the butler