New spelling

Saw this interesting spelling on the website of a young black person:

"Dis part ent bin updated 4 ages ,if urnt up her jus chillax,ill do it .. 1 day
mkay this iz relli old now but ima do mre stuff to it.. mebbe "

I think kids spell like this in chatrooms as a matter of course. But I haven't seen it in less ephemeral contexts, like a website. Wonder if it's the start of a new spelling revolution!