Subject: Dark Matter

Is it true that there is such dark matter as W.I.M.P.S., M.A.C.H.O.S., 
and Nuetrinos?  Also is it true that if there is enough dark matter in 
the universe, that the gravity from it will eventually lead to the big 
crunch, or if there is not enough dark matter that the universe will 
expand forever, and eventually grow cold and die?

Re: Dark Matter