Free alternative to meetup.com

I need an alternative service to meetup.com that is free for keeping people abreast of meetups, allowing them to donate, and collecting dues.  Assistance in finding such a thing is greatly appreciated.
frugalmuleAsked:
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frugalmuleAuthor Commented:
What do you guys think about bigtent.com ?

What I don't want is to sign up and then uncover the restrictions later, like the fact that you can't get emails from a group that you worked very hard to form.  This is what happened at meetup.com
nickg5Commented:
Have you taken a look at these?

Eventbrite
Ticketleap
Groupomatic

http://www.quora.com/What-are-the-best-alternatives-to-Meetup-com

At the bottom is a link to a free equivalent to Meetup as well as one to their top 5 competitors. We can assume their competitors are going to things just as good if not better.
Michael-BestCommented:
GroupSpaces
Free for all groups with under 250 members.
Similar to Meetup with extra features which Meetup does not have.
Read:
http://blog.groupspaces.com/2011/01/28/a-free-alternative-to-the-new-meetup/
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frugalmuleAuthor Commented:
Interesting.  With group spaces, as organizer, can you export and import email lists as needed?
Michael-BestCommented:
"With group spaces, as organizer, can you export and import email lists as needed?"

Yes, you can export and import email lists as needed.

Although not free , Ning is also worth looking at:
Link:
http://www.ning.com/
Brad RubinCommented:
Create a group on Experts Exchange and keep everyone posted and apprised of your meetup. Free members can join one public group.

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frugalmuleAuthor Commented:
I wouldn't be able to maintain my own list or anything.  EE is not the right tool for that one.
frugalmuleAuthor Commented:
It looks like we are going to end up going with Eventbright.com which is free for all things aside from accepting payments.  Nothing monthly.  Looks pretty powerfull
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