Make sure learners are aware of safe Internet practices. Consider assigning learners numeric IDs and neutral (but self-selected) avatars to protect their online identity. Set ground rules for learners, and enforce them. Let them know what is visible, what is not and what your expectations are for this kind of transparency. Everything is documented online. Make up stories about past learners that have failed to heed this advice. Whatever it takes to convince the little skeptics.
1) Age Requirement
Note that Google continues to revise legal agreements and related issues. As of this article's publishing, users of Google+ have to be at least 13 years old. There are ways to deal with this if you'd like to use Google+ with younger learners, including parents signing up for access, or simply using a single class account while at school.
2) Access Issues
For those students without access to technology at home, groups can be assigned so that each member has a role, and those lacking home access are given a role they can fulfill, and then given access at school in a rotating system. While there are always challenges to implement any resource, the pros can outweigh the cons with a little planning and patience.
3) Expect Challenges
Consider the "implementation dip." When you first begin using something, it takes time to adjust to its intricacies. If you face challenges, reach out to your PLN at school or online -- or better yet, to the students themselves.
4) Listen to the students.
Time and again my students have surprised me with their creativity and problem-solving ability, especially if they think it's a problem that an adult can't solve.
���