It turns out there are several ways of parsing a String into a Number in Javascript. Basically: http://stackoverflow.com/questions/1133770/how-do-i-convert-a-string-into-an-integer-in-javascript

All the alternatives seems to [perform fast enough](http://stackoverflow.com/questions/1133770/how-do-i-convert-a-string-into-an-integer-in-javascript) (ignoring ~~String, which gives innacurate results anyway).

Considering the above are true, the benefit that `+String` has over its alternatives seems to be code bytes.

What do you think?