Member at Large= Member who pays International dues, but has no chapter affiliation.
Land Chapter= Chapter that meets in person.
Online Chapter=Chapter that meets online, members can be from any country
Where did you get the emails to contact Online chapters? The Cyber Council home page
http://www.betajournal.com/cybercouncil.htm
Or the Online Chapter Member app?
http://www.betajournal.com/memberap.htm
Have you contacted Laura Wingfield regarding Online chapters?
laura@betasigmaphi.org
On the Online Chapter Member App's site it states
"Online chapters may pledge members directly into their chapters and pledge train those members through online meetings."
I take that to mean that a potential member, such as yourself, can pledge online.