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Amid concerns over adult content popping up on its new Vine video app, Twitter appeared Tuesday to have restricted how users can share sexually explicit clips.

YouTube users are now uploading three days’ worth of video to the site every second — a whole 24 hours more than the site had last year. To celebrate its 7th birthday, Google’s video-sharing site released all-new metrics about itself, including its new upload numbers as well as the fact that subscriptions increased 50 percent in the past year. Another cool fact? The site logs 3 billion hours of viewing time per month.

Facebook's $1 billion acquisition of photo-sharing start-up Instagram has shifted the spotlight to the newest phenomena in mobile apps: uploading personal videos from smartphones.

Google (GOOG) has acquired Green Parrot Pictures, a Dublin, Ireland-based provider of digital video.

In our early testing, iLounge has learned that some video delivery applications act differently over the 3G network than they do on Wi-Fi. The iPad's built-in YouTube application strips both standard and HD videos to a dramatically lower resolution over the cellular data connection, something that iTunes Store video previews notably do not do, instead staying at a higher quality and consuming a greater amount of data.

Hulu is thinking about charging for its videos. That's playing with fire, my friends.