Yeah, he's right. I used to cut up some white business cards and mount them to the flash for 'bounced' flash indoors, and I also used to tape tissue paper to the flash for diffusion. Wasn't excellent, but it was better than direct flash. Now that I've got an external flash, I've almost never ever shot indoors without flash before, other than for concerts with fast primes.
ha. just as i posed, i got the answer.
anyway, that's what i do too. just that i use parking coupons.
nothing can beat an off camera flash lah. the pop-up flash should only be used in desperate situations. haha.