PUBLIC MARKS from decembre with tags preview & extension

Script Summary: Add pop-up preview to any site.(Script homepage).....Rules for popup action must be written in "SITEINFO" in proper format. Properties of SITEINFO url (required)(RegExp) : URL to which the rule is applied. targetElement (required)(XPath) : XPath which select "A" elements. When "mouseover" action occurs on them, linked pages (values of "href" attributes) will be fetched. popupElement (required) (XPath) : XPath which select elements in fetched pages. These elements will be appear in tooltips. disabled (optional) : If you want to disable a rule temporally, set "false". style (optional) : CSS attributes of tooltips. Please be careful to write in CamelCase! (border-width -> borderWidth) stripe (optional) : If you set "true", small icons will be appended to elements on which the action will occur.

Snap.icio.us - Displays thumbnail Previews of your del.icio.us bookmarks when you hover over them.

Cooliris Previews gives you the power to browse and share Web links and rich media instantly. Just mouse over any link, and the Cooliris preview window immediately appears to show you the content. No more clicking back and forth or losing your search cont

Shows a preview of tab contents when you move your mouse over a background tab. It's simple to use, but surprisingly useful.

Greased Lightbox is a Greasemonkey user script designed to enhance browsing on websites that link to images such as Google Image Search, Flickr, Gmail, and Facebook.