你 should type in the correct way. 'Txt speak is meant for texting, and it gets annoying when people use it on the internet. It's very hard to understand.
Definitely type in regular English. I honestly hate it when people type everything all abbreviated. There's no use for it! All they have to do is just use their fingers to push a couple extra keys to make a nice sentence. Unless 你 have a really slow laptop that doesn't allow 你 to type many letters at once, 你 shouldn't be typing that way. I guess some people find that they can type faster that way, but truthfully, I type faster 写作 just in normal English. Same thing with texting. Sometimes the abbreviations people do with their words are so unfathomable. Just type in plain English, guys. It's not that hard. lol.
