No, it was DEPRECATED from the W3C.
Good luck
EDIT:
An alternative to highlighting is to display the entire line in a range or div for accessibility.
EDIT2:
I can’t be sure, but at first glance, Twitter doesn’t use it, BUT even if they used it (which they don’t need), you should not follow their bad examples, they can be wrong too! :)
EDIT3:
You say that this works in all browsers, although this may be true, because modern browsers try to be as compatible as possible, but you must bear in mind that good discipline always meets the standards.
Why? Many reasons: for example, a mobile browser (more popular every day) does not have enough memory for desktop browsers such as FF Chrome and IE, and they may not display toy content correctly.
EDIT4:
I just realized that you were talking about “moving” trends, I really regret the reason, for the sake of completeness, here is one example:
Demo:
http://remysharp.com/demo/marquee.html
A source:
http://remysharp.com/2008/09/10/the-silky-smooth-marquee/
Trufa
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