What is the best use of icons in the header? In my application I am using a number of icons for simple features such as "find friends". "ask a question" etc. This is mainly because I need to keep the header uncluttered and of minimal width to allow a straightforward use of the bootstrap collapse functionality (I can alter the collapse point default but then I run into other problems not explained here). I have added some popovers to them but is this enough. From a UX perspective one might argue that the user has to hover over them before he sees this. I also have a "tour" button which creates a simple tour of these buttons. I am debating whether to have this or not.
What is your opinion on replacing text with icons.....