OK, so I like the idea of my social network(s) revolving around my email but one problem (among many) that needs to be solved is the issue of ‘presence’ across all email platforms. My friends are spread across Gmail, Hotmail, Yahoo Mail etc. I am kind of experiencing Inbox 2.0 already in Gmail but those outside Gmail drop out of view when ideally they should be as visible as my Gmail contacts. The issue of cross-platform presence is nicely dealt with by Meebo so I’m sure it can be sorted by Gmail.