i can't link to direct experience with this type of control for web
interfaces. they've existed ever since AJAX caught on and i've only seen
them implemented properly in very limited circumstances.
a few social networking sites use(d) them in lieu of spin controls or normal
drop down elements to do things such as select age ranges or distance
proximity. it was quirky for the most part.
personally speaking, i've found these type of controls work best as volume
controls or as 'sizers' - e.g. to control the physical scale of an element
and as a way to allow a user to specify a scale rating as in a survey since
these controls have a min and max value and can be graduated.
people know how to use them since Windows and OS X both have analogs, though
they are more frequently encountered in OS X than than are in older versions
of Windows. just make sure that the 'knob' used to control the slider is
easy to manipulate.
On 11/1/07, Tim <tim.minor at gmail.com> wrote: