Patsylabrador, thank you for starting this thread, this is exactly why I continue to log in and look around the forum. Nowhere else could you get a rational and measured conversation about washing up!
Personally, I wash up with a half full bowl and rinse as I go with a dribble of hot water, the bowl never gets over full by the time the greasiest dishes are done. I have also noticed big holes on some washing up bottles, it certainly seems a ploy to get you to use more as it reminds me of the possible urban myth of the words "and repeat" on shampoo which allegedly doubled profits.