Continuing from
>>2
Those web developers taht are more successful are more likely to find a family, and reproduce. Since children have a tendency to follow their parents' occupation, the offspring will be more likely to become web designers, and use web decorations in their work.
Interestingly, this is an example of how a completely inanimate object, a tool if you will, uses people to propagate itself. The same could be said of any tool in general. That is, the most useful tool will benefit its user; thus, its user will enjoy a better life, be more successful, and produce more of the tool.