Can you guess someone's age?

[Sephiroth]

Like, do you do that sometimes in real life or the internet? Do you think you can guess the age of some people here on eyesonff without actually knowing how old they are (or acting like you have not looked before)? And how often are you right about it?

[FFNut]

In real life it is getting tougher just by looking, but I am usually within a few years.

Online its almost impossible as people are either always trying to act tough, or are more mature than I am.

[Lyndis Highwind]

I'm usually pretty good at guessing in real life, not so much on the internet though.

[Formalhaut]

I'm not a bad guesser of age, though I always avoid having to make one because of the unfortunate implications that can arise.