Meetup, a long time go-to place to create local online groups, has undergone a major re-launch in the past day. However, it may have missed a trick: not consulting the meetup organizers who pay through the nose for the service. There now appears to be something of a revolt going on amongst some organisers, who are vociferously protesting about the changes.

The reaction of annoyed organisers and members has turned into two, count-em, Twitter hashtags: #newmeetup and #meetuporganizersunite.

Alternatives to Meetup like BigTent are being touted, as is GroupSpaces – a startup which last year raised $1.3 million from the likes of Index Ventures and Angels like Dave McClure and Chris Sacca. It is is already gunning for “FormerMeetupOrganizers” with its own group and a blog post on the subject.