Less Than Zero

http://www.univie.ac.at/Anglistik/easyrider/data/lesspage.htm
It immediately recognises my first thought that this book is about a certain group and it is not representative of the 1980's as a whole.

There's proof of this throughout with the casual racist remarks.... UCLA = UCRA, they refer to them as "orientals" and Trent does a stereotypical racist impression.
There's also the treatment of one of the maids. She was kept on as the mother felt sorry that she had lost all of her family, she was then allowed to do what she wanted and was introduced to drugs but at the end of the day she's still going to be fired. False sense of niceness. No sense of repercussions in that class of family, but it would definitely have negative consequences for the maid.
In addition to this they mention that one of the girls they are aquainted with couldn't possibly know anything because of where she lives.

The site comments on the billboard and "disappear here" which to me symbolises that the excesses of the 1980's will ultimately result in the end of the person you are --> not meaning death neccessarily, which may be assumed because of the amount they drink, the drugs they take and the fact that they continue to drive their fast cars while under the influence, but that you cease to exist as your former self.

"You can disappear here without knowing it." (Page 176)

When this phrase is seen again (Page 183), it seems to say that again all this excess, money and lack of purpose will end you. Disappear here was on the advertising billboard and in the quote on that page it then says "Wonder if he's for sale" highlighting the negativity of commodities. You can have all the money in the world and it won't lead to a full life.

It talks briefly about MTV and I think that the significance of it within the novel is to show how these teenagers lifestyle is as just as throw away and ever changing as music videos. It will constantly change, (who they are/ what videos are shown) even if the overall background stays the same. (Money, those families/MTV is still going.)