The race among some of the biggest online companies to reveal more of the instant opinions and information flooding across the internet in real time has intensified, with Microsoft and Facebook each announcing important initiatives in recent days.
The initiatives reflect the broader impact on the internet that is starting to be felt by the soaring popularity of Twitter, the service that lets users broadcast short messages.
Twitter has quickly become the leading public repository of real-time opinions, gossip and information from millions of people, prompting search engines like Microsoft's Bing to try to index it, and rivals like Facebook to try to copy its success.
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