Wherever you are, just take your mobile phone from your pocket, point your browser to m.plazes.com and after logging in you can already see what your friends are up to (People tab), check what is happening around you (Plan tab) or explore the neighborhood (Plazes tab).
Of course you can plaze yourself by clicking on the orange Plaze me! button whenever you want. On your mobile see m.plazes.com
Esri devMeetUps - locate a developer meetup taking place in a city near you
ERDAS Webinars - Register for a free, online webinar from ERDAS
ILMF 2012 - International LiDAR Mapping Forum, Denver, Colorado, Jan 23-25, 2012
Esri Dev Summit - The Esri Developer Summit (DevSummit) brings together developers and GIS professionals from all over the globe. March 26-29, 2012, Palm Springs, CA
Where2.0 - where the people working on and using location technologies come together to explore best practices and emerging trends in software development, tools, business strategies, and marketing. April 2-4, 20112, San Francisco, CA
See more 
