One of the weak points of Google+ so far has been, ironically enough, its search. Searches for specific people often went nowhere, and forget about searching topics.

On Tuesday, however, Google introduced expanded search capability that finds people and topics. For instance, if you search "motorcycles," you'll get posts from Google+ on the topic, and "Scrabble" will yield recipes and such from other users. (See pictures below.)

"Google+ search results include items that only you can see, so family updates are just as easy to find as international news," Vic Gundotra, Google's senior vice president of engineering, wrote in a blog post.

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Gundotra also revealed that 1 billion items are shared on the network every day.













