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Also pretty easy to recreate using qTip2 http://craigsworks.com/projects/qtip2/.

I saw qTip, but looked too heavy. Prob. took as much time to write the plugin as to read the qTip docs.

No arguments there. But I suppose if you want a tooltip framework that also bizarrely functions as modal dialogs, hover menus, alerts, notifications, ........., and maybe even tooltips, qtip2 would probably cover your bases.

Either way cool plugin.

It also doesn't really look fine. The shadow doesn't follow the pointy bit, which looks especially bad with such a huge drop shadow. Does this even work across browsers?

the css shadow isn't required.

Bootstrap is a hover pop-up, mostly used for read-only. This is more like a click pop-up both read-write. User can click, fill in a form and submit.

Because having just one of everything is boring and eventually stagnates?

Absolutely. I just wanted to be sure I wasn't missing some new twist that this tool was providing.