I use all of them in most circumstances... I'm not sure I'd say 'hi' or 'hiya' in a formal setting, that would be more 'hello' or 'good morning/afternoon' but certainly all friends/family/dept/collegues I'll say 'hi' or 'hiya' - and I'm not scouse lol, just always used 'hiya' which annoys me lol cos I hear myself say it in a really sing song kind of way and cringe lmao! I do think these days greetings are far more informal than they used to be - it used to be verging on a capital offence (slight exaggeration) to use the wrong greeting for the wrong person!

And Bug - EAT WOMAN! lol

Java, I don't think hiya started in Liverpool, it's just something we say - we drop the 'h' so it's more like iya. When I first met my South African friend I noticed that she said it a lot too - but it turned she was taking the mikey!

Ok thanks Eska and a big hiya to you :p

Actually, it's a well known fact that hiya originates from popular karate movies in the eighties, including Karate Kid, Karate Kid 2 and Revenge of the Ninja.