i wish people would accept constructive advice when i play with them.... i will admit that i have raged in games - it happens to most people, however.. i always start out giving gentle reminders and tips if people need guidance. if i am bot lane and they have a hostile jungle i will say "be careful of the far lane brush, skarner will try to lane gank us so we should try to get bush control." my TYPICAL response 4/5 times is "stfu" literally, "stfu" and then they will proceed to ignore my advice. god forbid i gently remind someone to ward their lane top or mid, they will get hostile most of the time, or ignore me.
im glad to see people responding positively to advice... but you must be getting lucky on people youre playing with 