I never rinse and nappies but I never used cloth on a newborn I will confess to being a poop picker though, I get a bit of loo roll and pick of any ermm lumps this is reeeeeally gross but I find it strangley satisfying!!!!!
As long as it is runny ours goes in the wash as it is. We have problems with Elouise's as she often gets bits suck to it so I have to pick off with loo roll . If lumps end up in the wash we end up with peas and sweetcorn stuck in the rim!!!!