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Trendisimo! Trends and Search for Google+
Google+ has attracted over 25 million users since it started this summer. To enhance the Google+ experience +Zlatan Menkovic and +Nico Schoonderwoerd launched the Trendisimo.com website and the Trendisimo plugin for Chrome which supplies the Trending Topics and Search for Google+.
Because Google doesn't have an API yet, they had to find an alternative way to construct the Trending Topics. The public messages in the timeline of the Trendisimo plugin users are sent to the Trendisimo server. From these messages, the Trends Engine (also used by Twirus.com which delivers Trending Topics and most popular tweeps for Twitter) constructs the Trending Topics. Clicking on a Topic will give you the last posts containing this phrase.