By JP Mangalindan
September 21, 2011

Fortune’s curated selection of newsworthy tech stories from the last 24 hours. Sign up to get the newsletter delivered to you every day.

* Google (GOOG) upped the ante with Google + by prominently promoting the social network on with a big blue arrow. (As you can see from the above screenshot, it’s hard to miss.) The Internet giant also added new features, including search, the ability for Android users to use the Hangout group video chat feature, and the ability to turn Hangout sessions into live streams with an unlimited number of viewers. (GigaOm)

* Later today, Yelp CEO Jeremy Stoppelman will appear in a Senate Judiciary Subcommittee on Antritrust investigating whether Google is being anti-competitive. Stoppelman took to Yelp’s web blog to elaborate on the move and also posted the testimony he will deliver. (Yelp)

* Facebook is expected to grow to nearly $4.3 billion in sales thanks in large part to Facebook Credits. (VentureBeat)

* Glam Media is buying the custom social-platform start-up Ning for $200 million. (All Things D)

* Instagram is about to hit 10 million users one year after its original launch, and to celebrate, it’s launching version 2.0 with an improved user interface and photo filters that perform 200 times faster. (TechCrunch)

* GrubHub, which offers users food delivery service from over 13,000 restaurants in cities like New York, San Francisco, Portland, and Denver, raised $50 million during its latest round of funding, led by Lightspeed Ventures. (TechCrunch)

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