tooltip in the form

Question

Lets assume we have a simple form like

 label: <input>
 label2: <input2>

and we want to place a tooltip icon: "?" there. Does it matter where we place it, for example:

label ?:  <input>

vs

? label: <input>

vs

label: <input> ?

What is the least annoying for the user, but steal clear and visible? Or all approaches are good and none is favorable?

Answer 1

I would go with

label: textfied (?)

for a user who doesn't need the hint, it's safely tucked away AFTER the textbox so it won't distract him.

I am assuming the 'tip' here is to guide users who have no idea what to enter in a particular field as opposed to preempting a frequently entered wrong answer (eg: formatting...in which case the hint must always be displayed rather than a using tooltip).