I'd like to hear some PUA's tactics for forward merging.
There are two types of forward merging as I see it: warm and cold. In cold, how do you guys tell the group you'd like to merge into, "Hey let's go meet these people even though none of us has any idea who they are?" That's bad, right? But truthfully, saying something like "Do you guys know those people over there? No?! Well lets go make some new friends

" is just as bad.
In warm, what sorts of tactics do you use to reinitiate convo with an old group?