N00b slang for the alt attribute of the HTML img tag. Usage indicates a probability that the person speaking doesn't know the difference between a tag and an attribute.
When people get persnickety with me, saying that my NiDEs don't have Alt tags, I get persnickety back at them, and tell them there's no such thing as an Alt tag, and that I'm not an SEO spammer, so I don't put alt attributes in NiDEs.
by Downstrike May 21, 2006