The word "partner" is thrown around frequently these days. Does that mean your boyfriend, girlfriend, husband, wife, lover, or all of the above? I'll leave that up to you. But for Moishe House, that means teaming up with another organization and co-sponsoring an event. We've been around a while in SF so a bunch of other organizations know about us and want to use us for our 450 person email list. However, it's not just a one way street because we often benefit from meeting new people from different organizations. For instance, we typically do a lag b'omer bonfire on the beach with Bay Area Tribe, a different jewish organization that focuses on many of the same goals as Moishe House.
Partnerships are wonderful when everyone provides an equal share of the effort with regards to promoting, inviting, setting up, and all the good stuff that goes into a good event. But when one of the groups involved is just looking to put up another name on the list of "co-sponsors," we'd recommend thinking twice about joining up. It's not a reason to not join in, but it's certainly something to consider.
Houses developing their email lists should try to partner as much as possible because it's a great way to show off Moishe House's strengths and to try and recruit folks for future events. That said, good luck with your partnerships!