Many people are making use of key online video platforms like YouTube, Vimeo, Instagram, and Vine to market their businesses to large, global audiences. However, popularity can be a double-edged sword.

Vine is the new mobile app that enables users to create short videos and share them on social networking sites. For businesses, the micro video app offers creative challenges as well as promotional opportunities - as Rachel Miller explains.

It's the kind of moment that comes rarely, but tech journalists live for it: a service is launched with little fanfare and receives a sudden, energetic burst of genuine buzz. Developers start remixing it in all kinds of fascinating ways. It's supremely easy to use, and mobile, so we get hooked.

Laughing at Charlie Chaplin can be a serious business. Chortling at a funny film may seem to be an activity with few consequences for health, but research shows that it does more than exercise the 20 or so face muscles involved in laughing.

Ultimately laughter is good for your health. Laughter protects your heart by improving the function of blood vessels and increases blood flow. This can help prevent you from a heart attack or other cardiovascular problems. Laughter boots your immune system and improves your body's ability to fight off diseases.

Story Number: NNS020610-02 Release Date: 6/10/2002 2:29:00 PM YOKOSUKA, Japan (NNS) -- Laughter research (yes, there is someone out there researching this) has shown that humor and especially laughter can help keep our bodies strong and disease resistant. Humor is equally helpful to our mental health and the way we deal with stress and worry.

I just attended a "Laughter is Good Medicine" seminar put on by a local hospital. The speaker pointed to evidence showing that laughing has such good effects as: Reduce blood pressure Lower blood glucose Dull pain Alleviate stress and anxiety Improve feeling of well being ... and it even burns substantial calories.