Arrange to meet your friends and chat online in real-time.
Yes, the SELFIE has made the Oxford dictionary and, delightfully, the OED can track its first use back to a post on the ABC online forum back in 2002. Characteristically for an Australian term, the 'ie' spelling has prevailed over the 'y', in the tradition of the barbie, Aussie, wharfie, truckie, subbie (that's a subcontractor) and chippie (or carpenter/cabinetmaker).
The SELFIE formation, with the diminutive 'ie' on the end of a noun, or abbreviated noun, is pretty standard.
Or you can use the portmanteau style, in which you take two words and join them together either in their entirety or using a abbreviated form of one word or the other (yes, or both). So, if you're looking at Wikipedia, you're also seeing a word formed by combining the Wiki and encyclopedia.
There are more. Jeggings may be a recognised, if unwearable, item and cyborg is now so familiar that we may no longer discern its cybernetic organism origin.
I came across another recently. Journalist Edwina Storie, http://edwinastorie.tumblr.com/, has neologised the word GLADIE to represent someone in that period after teenage years when one is somewhere between a girl and a lady but not yet grown up.
It's an interesting concept, particularly as its becoming clearer that the brain doesn't fully mature until 25 or so. The concept of the teenager was a 20th century creation - this may be the 21st century's contribution.
I think this word is delightful, and it makes a useful distinction. Though I'm bound to say that, at the end of this period, the sign that you've outgrown it would be that you then want to be a WOMAN.
Even more interestingly, what would be the equivalent label for young men? Any ideas?