Big news you may have missed:

• Yahoo Acquires Mobile Ad Tech Startup - After acquiring 16 companies focused on consumer-facing mobile products, Yahoo has made its first investment in mobile ad technology since Marissa Mayer became CEO a year ago, buying Admovate.
• New Steve Jobs Movie Trailer Arrives Exclusively on Instagram - A trailer for Jobs, the indie film about the late Apple CEO Steve Jobs, has debuted on Instagram.
• First Instagram Video To Reach 1 Million Likes Stars Shirtless Bieber - Instagram owner Facebook confirmed to Mashable that Bieber's first Instagram video (click here to watch), which he posted June 20 when Instagram added video capabilities to its popular photo-sharing app, was the first to reach the 1 million-Likes milestone.
• Time To Change Your Tumblr Password—Immediately - Tumblr has just made users aware of a serious privacy compromise that enables anybody with the ability to “sniff” traffic on public Wi-Fi to view Tumblr users’ passwords in unencrypted plain-text format. An official Tumblr announcement urges users to change their passwords immediately if they’ve used the app, and to download the newest version of the app as soon as possible.

Other things other bloggers wrote that I like:

• Stop Working and Start Creating by Claire Diaz-Ortiz