I'm confused now.
I thought that the whole point of Mantis' posts was that increasing your raise when you know you can exploit the BB's tendency to call then c/fold the flop is a good thing, and this appears to be agreeing with that strategy.
Varying your raise sizing is great if you know how an oppo will react to the different bets, if however you don't know how he will react it just adds in another variable and makes taking optimal lines a lot harder.
I may have misunderstood though - especially given this later post
as soon as you posted demps i knew it would be some kind of sycophantic lure towards dave.
Eh? Let me make it clearer for you.
DO NOT VARY YOUR RAISE SIZING
I think Mr Flush saying DO NOT VARY YOUR RAISE SIZING is aimed towards the majority of players. Players who are good enough to vary it in the right circumstances know why they are doing it and will use it to exploit other player's weaknesses.
If you aren't 100% certain of the reason for varying a raise size then don't do it.
Personally speaking I very rarely vary my raise size. When I do it's because I've picked up on a particular tendancy from a particular player and decide to exploit it. This is usually in live play because online you just don't get the opportunity that often.
You have to be careful though because if there's a good player at the table he may also notice what you've spotted and realise what you're up to so use it to exploit you.
So unless you're very good and know that there's nobody good enough to spot what you're up to DON'T DO IT. It's just easier.