> It’s very unlikely you will end up with a hundred categories. The Internet Advertising Bureau uses a similar structure to categorise things. For example: -

> It’s very unlikely you will end up with a hundred categories. The Internet Advertising Bureau uses a similar structure to categorise things. For example: - IAB20 Travel - IAB20-1 Adventure Travel - IAB20-2 Africa The problem is that sometimes you cannot find an appropriate category despite there being hundreds of them defined.