The online messaging site said that it is analyzing its traffic data to determine the nature of the latest attack.
Recycling program turns an environmental hazard into electricity.
How much faster is 3G than 2G? Where can you get 4G? And what is 2.5G?
The Japanese electronics maker had backed another high-definition video format, the HD-DVD, but ceded defeat last year.
FriendFeed co-founder Bret Taylor says the two services will eventually merge, though FriendFeed will operate separately for now.
The mayor goes on a crusade to make it a hub of renewable energy.
Facing dire pollution and wanting to be in on what may be the next industrial revolution, China positions itself to be a leader in green technology – with major implications for the rest of the world.