I agree with most of t3g's criticisms of Mozilla, but I have to correct the
erroneous claims about RiseUp.
"[Mozilla] own the RiseUp email site"
Mozilla have given some funding to RiseUp (mainly to fund the development of
the Tails GNU-Linux distro AFAIK), but they do *not* own RiseUp. RiseUp is
run by a self-governing collective of radical geeks, some of whom were/ are
involved in the Indymedia open-publishing news network.
"RiseUp is very inclusive and will kick you out if you do not follow their
strict ideology."
RiseUp is a hosted service provider, not a piece of software. They have every
right to decide who they will and won't provide services to.