1. A computer-implemented method for generating a load test, the method comprising: using the computer, recording a test session that includes web flows associated with a first set of users and a browser; modifying the test session so that the web flows represent behaviors associated with a second set of users, wherein the second set of users includes more users than the first set of users, and wherein modifying the test session generalizes the web flows; filtering the test session using one or more filters in a set of predefined filters; and incorporating the modified test session into the load test.