Ah, I think I know what is going on. Did you send a welcome message to the group from your cell phone? If you didn't then your group is staged and not yet created. I need to check for numbers in the staged groups as well. Thanks for the feedback.
381 karma · joined November 23, 2008
P.S. Click the phone image to watch the video easter egg
No we don't re-sell or do anything with the email addresses.
As a group member you can see a list of the other members and remove yourself from the group.
In a nutshell I use Postgres for the relatively static data and Cassandra for the very high volume transactional data. I use Redis for ad-hoc data structures and some caching. The natural fit means I'm not jamming de-normalized data into a relational database for performance reasons. Hope this helps.
Redis is a swiss army knife, Cassandra is a Ka-Bar.