I have seen programmers "battling" it out with really complex mathematical problems in their codes, particularly in the fields of game programming, physics programming, graphics programming, etc. I am a web developer, and I wonder if there are math concepts out there that I can use for web programming. I started web programming a year and 2 months ago, and all I have dealt with were complex analysis of systems, database queries, user interface designs, simple data structures, complex data manipulation and interpretation (regexes, parsing, etc) but I have not (yet) found a need for complex math.

So to repeat the question, are there mathematical concepts out there that can leverage my web development skills? If there are, what scenarios are do they come as an advantage or indispensable?