Lycos started out as a an internet search engine in 1995... one of the very first of such things. At one time, the web page you are now reading gave detailed instructions on how to get your website included in the Lycos search results. (That's why it is still in our archives.)
Fast forward a long time....
In 2022, Lycos is still a search engine, although not one of the bigger players in this space. They also provide email services, website domain registration services, weather information, and website building tools (Tripod and Angelfire -- neither of which I would recommend for a commercial website).
If you are an advertiser, they can set you up with online ad space through their network.
Click for more info on their advertising platform.