There are a few useful tools in GWTs such as displaying what key phrases your site appears in the SERPS for, not just the ones that you receive clicks from. It also tells you your average position in the SERPs for your most popular keyphrases.

Another couple of tools that can come in handy are the ability to change the speed that the googlebot indexes your site and being able to geolocate non country specific domains .com .net etc. This is very handy if your server is in one country and you want to target the the SERPs of another country. You can even do this on a per directory basis, so one part of your site appears in one country's SERPs and the other in another country's.

They have some other very useful tools, they're not essential, in fact most people don't even realise they exist but they are worth investigating.

I don't know the specifics of how a Lycos Shop is configured, but you should have a method for adding additional meta tags to at least your homepage, if not each page of your site. Black Rhino is likely to know if this is possible with Lycos.

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Lawrence