Well, it happened. This weekend I got this email: "[Your Mom] is now following you on Twitter!" Along with that, and the major amounts of discussion about twitter during my Grandfather's 75th birthday dinner last night, Twitter has now officially jumped the shark. For me anyway. Knowing your mom read your tweets from the past two extended weekends of WMC and SXSW parties does that to you. But before this personal milestone, I found a site that ranks twitter users in different cities by following