For those that currently pay it and will be affected by the increase.
Prior to the changes and indeed after the changes, if you had a losing week it would mean the following week you could win at least what you lost the previous week plus a tiny bit more before the 20% premium charge kicked in. Based on how the Premium Charge has worked before this will not apply to bets settled between now and up to the 18th as the premium band moves up to 40% +. It is therefore important for anyone who is affected by the new charge not to take any significant risks on Betfair between now and the 18th and to generally green or red out wherever possible.
As for not being able to add anything extra worthwhile there is one snippet of advice I've given straight away that I bet isn't available elsewhere. A simple no would have sufficed instead of your pompous response.