[pavel_lishin]

Why is a multi-select better for a large selection than a series of checkboxes? iirc, multi-selects suffer from the problem that if you accidentally mis-click on one entry, it'll unselect every other previously-selected entry, no?

[carlosjobim]

You can click and drag to select a bunch of options at once, just like you click and drag to select files in your file manager.

[codingdave]

Because if it is a large list, you give up massive amounts of screen real estate to a gigantor pile of checkboxes.