Does a rollover that replaces content with an icon help user understand the role of a button? was a question asked recently, and what bothers me about it is that the title is not an accurate representation of the content. The content of the quesiton and the answers are about whether their particular rollover helps users understand the role, as oppposed to rollovers with icons in general.
Is this a bad thing? The main problem I see being that when searching for it, you may click on it expecting one thing and get another. Also, IIRC the duplicate question search only displays the title, so this may cause accidental duplicate marks.
If so, how can we avoid it in the future?