Short for mylifeisG (great), a website that is the opposite of fmylife. The website is full of short uplifting stories that people send in about what happened to them. Initially the website seems kinda nice and inspiring, but very quickly it becomes cheesy and lame, to the point where you feel very sick and cannot read it anymore, and you go running back to fmylife.com for a nice healthy dose of pessimism.
Today, my definition got accepted on UrbanDictionary. MLIG.