Marina Adshade discourages profile pictures that makes you seem more attractive than you are:
It seems to me that while online dating sites in theory will shorten the search for a mate, the fact that everyone uses their best picture is creating beauty inflation that is driving up an individual’s perceptions of their own price on the market. If prices are artificially high, and slow to adjust as a result of this inflation, then the market will take a long time to clear.
The Dish 