I’m a member of 6 or 7 big public waves, each with hundreds of users. Other than when I first got my invite (and when a few of my friends got theirs) have I seen another person actively using the same wave as me.

If you zoom in on the picture below you should see green dots next to people online (unless I’m missing something) and there are none. Most of the public waves I go to haven’t been updating in a couple days (if that recently).

In order for Wave to be truly effective, it needs to be an interactive experience. Once my team at Spoke get their invites, we can give it a run for collaboration, but until then, it’s a ghost town, and it bores me.