Use jQuery, not $
When you use $ you’re simply using that character as an alias for jQuery. Lots of people use $. People write blogs and books and write $.
However, prototype.js also uses that alias.
There is a workaround, which is to call jQuery.noConflict() before you go to use jQuery, but I think we all agree that’s rather silly.
So please, type out jQuery and not $.
It’s only 5 more characters to type…