<MARQUEE> and <BLINK> are 2 browser specific tags. However, these tags are displayed only by certain browsers only.
<BLINK>: Mozilla Firefox
<MARQUEE>: Internet Explorer
BLINK Tag
This tag can be supppored only by Netscape. IE ignores this tag. So if you are using Internet Explorer you wouldn’t see the blinking text below.
<BLINK>Blinking Text</BLINK>
Advantage: It is a standard HTML tag which is actually easiest way to grab visitors attention to something you think that is important in your page.
MARQUEE Tag
This tag provides some animated text. Unfortunately, it is supported only by Internet Explorer. It creates a scrolling text marquee. Besides that, you can also set delay for your animated text.
<MARQUEE scrolldelay=”500″ width=”200″>Scrolling Text</ MARQUEE>