I think there is only on keywords that are to the left of the dot. Many will disagree with me but the market seems rather flooded; little demand with too much supply.
For the couple of years i have spent in domaining, these types of registrations have been awful for me. And from my short time on the NamesPros have not seen too many favorable appraisals or sales on these types of domains.
The most important thing is to have a plan for what you are going to do with it. Do you have potential buyers lined up? Do you see an emerging trend (not a dying one) Do you see value? Do you have a plan for developing? Do you have a marketing style to quickly unload? These are all the types of questions I ask myself before registering anything. Since I started asking those questions about 5 months ago I have not regged anything.
Check out the secondary markets for some research. Hope this helps.