by Claudine Zap FitFlops ? So last year. The new "it" flop is the SwitchFlop . The thong sandal has a removable, interchangeable strap. As creator Lindsay Phillips puts it, "Change your look, not your sole." Word of the clever design sent fashionistas running to the Web to look up " switchflops ," which stepped up 3,200% in one day alone. Lookups on Yahoo! also included " switchflops.com ," " switchflops ballet flats ," and " lindsay phillips switchflops ." In fact,