Question: "Just off the top of my head - do people still use the "mouse-over" functionality on webpages anymore and if so, for what use?"
First, for those that do not know what a mouseover is, check out this article at Webopedia.com
Mouseovers are still in use all over the web offering a sense of interaction and ease of use for most users (since 2001 with Netscape 2.0). From an on/off state for navigation, highlighting states on a map, pop-up information when your mouse hovers over a word to switching an image with your mouse. You can achieve this using html, css, jquery and/or javascript (see HTMLgoodies.com for code examples and W3Schools.com)
We like mouseovers both as web designers and as web surfers because it helps users know where to click, offers an interaction, and can help show where you are in the website content layout. Not to mention they can add some fun to the surfing experience!
See some examples of mouseovers:
caregivinghelp.org
chanceofdoom.com
greensbywhite.com
mwalliance.org
yourplanb.com
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