Results of typeahead search on Facebook recently became category-sorted and are divided into profiles, Pages, apps, groups, Events, and Questions nowadays. This division was introduced with the purpose to increase search abilities of account holders.
"Facebook Search" Category
Try Free Facebook Search by keywords and Facebook People Search without logging in.Google’s Social Search vs. Facebook
Google announced integrating social media in to latest search engine. They managed to do so without mentioning Facebook in an entire blog post.
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