A simple improvement for this would be to add the $ord identifier, so instead of 3 it will say 3rd, 4th instead of 4 etc. Look in the help file if you need to.
Another thing would be to have a seperate variable for each channel, because this code will increase the variable any time anyone joins any channel, and it will not accurately reflect how many people have joined that channel.
And also it would be You\'re not Your.