[Digital Jedi]

Just to clarify further, in code white space is not the line breaks, which is what I think you were referring to specifically. White space is anywhere the space bar was pressed. So minified CSS and JavaScript remove white space, new lines and tabs from the code and compresses it down to practically unreadable code. But it does save some resources. However, if you were thinking of just removing space and lines inside templates, then the effect on page load would be negligible and make it harder to read (and upgrade).