http://mingle2.com/welcome/faq_message
Why did I encounter an email limit?
"We had to place a limit on first-contact
emails because of spammers. Basically, this
cuts down the number of first-contact emails
that one can send within a two-to-three-day
period (we can't divulge anymore information
about this limit). However, a member affected
by this limit will still be able to send an
unlimited number of emails to those with whom
he or she has already had some back-and-forth.
It should be noted that MinglePlus members
are exempt."
You will find that everything done on Mingle2
is for the benefit of the members.
All free.
Enjoy :-)