Learn today, plan for tomorrow.
Sign up for news and offers from Planetizen Courses, the online learning platform for planners.
Communications designer Sidney Blank got the idea for the site when his company moved into a new building in New York.
"Every building is set up with a twitter account so that others can tweet to it and follow the collective conversation. Once you have used STACKD for a while, the twitter feature becomes an important alert to information that is time-sensitive or changing. I could tweet that I have a chair to sell, or that I am looking for a tip on where to go for lunch. If we were to consider our building to be part of a network that can circumvent the borders of individual offices then I could also let other businesses know when our conference room is free or that we have a spare desk on Thursdays and Fridays."