ASCII defined 127 different alphanumeric characters that could be used on the internet: numbers (0-9), English letters (A-Z), and some special characters like ! ANSI (Windows-1252) was the original Windows character set, with support for 256 different character codes.
In addition, remember to follow the rule of "show don't tell." Instead of describing yourself with a long list of adjectives, recommends talking about what you do and which activities you enjoy.
If you're altruistic, talk about your volunteer work; if you're an adrenaline junkie, mention your latest foray into sky-diving.
A few of its free services are: Information : is a not-for-profit organisation which archives the old versions of websites from all over the world for people to access.
For starters, although many of the apps aren't intended for them, it's easy for savvy teens to get around registration-related age restrictions.
Also look at other profiles to see what types of descriptions pique your interest.