l-l-l.com domain ? market value and possible use ?

I've been reading a lot about l-l-l.com domains and oppinions are splited about real value, use and option instead of lll.com

Now, I have some of them I wonder what to do next.

One of them is:

F-R-X.com

(stands from FoReX.com , high paying keyword, good market share and searched term).

What do you think?

 

1 "-" can cut the value of a domain by 100%, so what do you think 3 would do? this is reg fee - $0

 

thanks for your oppinions...but there are just 2 "-" and there are a lot of such domains already regged and sold.
Second "-" char is skipped by SE (including Google) so it is read exactly as it was without...

Merry Christmas !
R.