When to Use 'I.e.' and 'E.g.'
by Meghan Moravcik Walbert from Lifehacker on (#4NP7W)

Before there was LOL and TLDR and STFU, we had other abbreviations that helped us to quickly and easily convey ideas. These still have a useful place in our writing, because they still help us quickly and easily convey ideas. They are i.e. and e.g., and they are not the same thing.