who created this web app?

If you mean “who created fluther”, the answer would be ben and andrew. You can read more about them on the about section

The design was done by Mark Bixby..
http://commandshift3.com/site/fluther.com

Originally chuck norris
then remixed by God

This web app was created by the developers of Fluther to extend the collective community to iPhone users.

In the case of the chicken or the egg, and which came first, Fluther was first. It is a community that has been around for more than 2 years!