I love Meredith who writes the Baby Bump Project blog. In her post 'Caesareans: preventing the 'trauma' of natural birth' she talks about a surgeon in Sydney who presents cesarean section as a completely 'risk free' option to the 'terrible' outcomes of vaginal birth which includes incontinence. Meredith says in a nutshell:
Right. And what were the risks of caesarean again? Oh that's right. I think DEATH is on the top of the list. I think I'll take a little incontinence (which can be remedied with exercise!) over a casket.
Postscript: The reality is that cesarean section is unlikely to make much difference to incontinence later in life - it is not so much the birth process that causes incontinence, but pregnancy.