Some of you have contacted organizers to ask why the monthly meetup is using eventbrite for signup rather than normal gdo signup.
This was discussed at one of the meetups, and later among the organizers, but in the interest of full disclosure here is the reasoning...
Our current monthly meetup venue requires a sign in list and check ids against it. However, groups.drupal.org does not enforce that people add their name to their profile. We put a message reminding people to do this, but invariably a certain percentage of those who sign up for the meetup don't put their full name on their profile (or do it on d.o. and not g.d.o.). As a result this adds anywhere from 10 to 20 minutes of work to whoever is managing the signup list for the meetup every month, Not a big deal one time, but really trying after a few times.
Solution, Eventbrite. It's free, and allows to be configured to enforce name being entered. And the name can even be hidden to protect privacy. Win/win.
Only downside is signup is not recorded in perpetuity on g.do.
I have filed an issue in the g.d.o. issue queue requesting that signup in g.d.o, have an option to force name to be entered either on profile or better yet independently on the signup (for those who would rather have their profile without name). Till that issue is resolved eventbrite is the best solution for me as the list compiler.
Of course, if someone feels super strongly about this issue, please volunteer to manage the list for the monthly meetup every month. I can show you how and pass the baton, but honestly after a couple of months doing it I suspect you'll agree that eventbrite is better for the moment.
Cheers,
winston

Comments
re: temporary fix = eventbrite
+1
Joe Bachana
First Employee at DPCI
1560 Broadway
NY, NY 10036
212.575.5609
www.dpci.com
The issue itself
Anther way to help is to just work on the feature request for groups.drupal.org and signup module so that first and last name are required. That issue is at http://drupal.org/node/1175322.
I have created a bookmarklet...
That will allow us to use the general signup until we can get something done (or we can do something ourselves) revolving around this issue. I think it is a bigger issue, we should maybe have fields that are part of the user profile that the user can choose to display or not, but if a user signs up for an event there could be an extra tab (maybe a view - that is only available to group organizers) that can be customized to the requirements of the individual groups organizers.
RobbieTheGeek
Fixed.
I wrote a patch for http://drupal.org/node/1175322 and got it deployed it with help from coltrane and greggles. Thanks for stepping up, guys!