online services that facilitate communication and interaction among people who want to share information about their lives, issues, and events using a multimedia mix of text, pictures, video, and audio
electronic communication that enables users to establish online communities for the purpose of sharing content, ideas, personal messages, and to share information such as videos and photographs
" It is probably not the easiest time to come in and take over the shuttle program , but then again , I look forward to the challenge , " he said .