Twitter was supposed to shut down for about 90 minutes to perform a critical network upgrade, but that’s been delayed, according to a blog announcement by company head Biz Stone.
The microblogging site has become a vital conduit to the outside world for those protesting the results of elections in Iran. Along with Facebook and Flickr, it’s currently blocked in the country, but tech-savvy young Iranians have been able to get Tweets out using proxies. Information on the protests is sent via #iranelection.
