Tech Five: Facebook kicks off f8 conference

Prepare to hear a lot of news Tuesday on Facebook, as the social networking titan launches its f8 developers conference in San Francisco. Get familiar with the word "chatbot." The social network will likely have plenty to say about it during its f8 keynote address Tuesday. This comes off the heels of Microsoft's experiments with chatbots on Twitter. Facebook is also expected to share more updates on its Messenger platform.