single word requests - Pejorative terms for children or teenagers using the Internet

In Poland we have got many names for young children or teenagers using the Internet. For example we could see on the Internet that many have mangled the mother tongue and have been writing like this:

I’m CoOl, dON’t yOu ThInK :* swEEt

The point is that they mix capitalized and normal letters. We call these people pokémons.
I can see that this way of typing is also spread around the world so what do you call such people?

Second issue. Spotty teenagers flooding the web, asking over and over what had been answered, disregarding net etiquette. Someone forged the term of ‘neo child’. neo stem from the name of the product — Neostrada — a broadband Internet from the largest Internet provider in Poland: Telekomunikacja. Neostrada was and probably has been the most popular way to connect to the Internet so in some period of time we experienced such neo children.

Please watch this YouTube video to better understand what I mean:
http://www.youtube.com/watch?v=d6DZOq2hulk
(hope you like it :D)

So, do you have a name for such stupid behaviours? Ah, what is more interesting is that not only children can be called ‘neo’. Adults can too if only their behaviour is similar.