Avoid using the BLINK and MARQUEE elements. Use another
method, such as text size, to draw attention to the text. Text coded to BLINK
or MARQUEE is not readable by screen readers. Also text displayed this way can
be difficult to understand by users with learning disabilities. Furthermore, as
is stated in the
World Wide Web
Consortium guidelines on accessibility, people with photosensitive epilepsy
can have seizures triggered by flickering or flashing in the 2 to 55 flashes per
second (Hertz) range with a peak sensitivity at 20 flashes per second as well as
quick changes from dark to light (like strobe lights).