The nice thing about twitter is that you interact with people worldwide. Nice thing about meetups is that you can meet people face to face. That’s what it’s all about, isn’t it?
If you organize large events, this will be an opportunity for a lot of visitors to meet up. The majority of the visitors will, let’s put it politely, show modest interest in the content part and are mostly interested in connecting to other visitors. Organizers are encouraged to facilitate ‘micro meetings’ within the event that will contribute to the event experience in a very positive way .