4freebucks and FreeEzine are different style programs from CE Mags.
To make a long story short you can compare 4freebucks and FreeEzine to per-sign programs and CE Mag to a rev share program.
So, you are not going to get the same "conversion" stats with CE Mags, but you get a % of the upsales. Therefore the "member areas" probably have vastly different philosophies as well.
You get it? Hope that helps.
