Honestly I would judge someone far more for making this intellectually lame illogical connection that says: posting selfies = unprofessional than I would for the people actually posting the selfie.
Yup.
Some of the posts on this thread are insane. Women who post selfies are unfit to teach children, causing a mental health collapse, ruining self esteem for nine year olds...my God. Or it's wrong to "show off your face" (!!) unless you make an entire living out of showing off your face and helping others to do the same. Vert the ferk.
If that's the world you live in, selfies are the very least of your worries. I know I've said this a couple of times, but for the love of God don't let your kids get into art and art history if this is how you live. The number of self portraits out there will make your moral compass spring a leak.
I remember reading a fat activism blog once; I don't agree with everything that movement promotes, but I was struck by a point this blogger made. She said she posted a lot of selfies because as a fat, middle aged woman, she was usually ignored and made to be invisible, or she was presented according to other people's perceptions, For example, there was the time she saw her own body, head cropped out, on the news in a story about the obesity crisis, or the time a photograph of her, taken without her knowledge or consent, appeared on a website dedicated to laughing at "ugly" people. So she took and posted selfies so that she could be visible and on her own terms.
It's flipping a camera round, snapping your face, possibly adding a filter that looks a bit daft to some people, and sharing it with people who elect to look at it. It's not a sign of moral collapse, even if the goal was to hear your friends say that they think you're pretty.