Adding service keywords allows you to further refine any type of service that you have selected within the services filter.

For example, lets say that you would like to find a Swedish Massage. Select "Massages" in the services filter and type the word "Swedish" into the Service Keyword text box.

Now you can solely browse Swedish Massages without having to see Shiastu, Hot Stone, etc. Delete your keyword and you can see every massage offered on Lifebooker.