Hi Kenshin Kid
The no text talk request is because the forum has members from all over the world and of all ages. Many of the older generation would be struggling to work out messages in text talk ( no offence to that age group, I am sure some are text talk savy)
It is a simple rule out of courtsy and consideration for all ages and races so that we can all enjoy the forum. A text expression in the UK might not even mean the same in another country. I can remember being really shocked when a US friend referred to 'fanny bag' for one of those waist pouch things

The meaning I knew of the word fanny was quite different

someone could be unintentionally rude or insulting.
So that's the explanation