Would you use such a feature in your client?
 - yeah if it's good and more like floor() that round()
Do you think it makes sense, also for non-technical people?
 -  a lot but if you have 0.109, you round it to 1.11. then something cost 1.11 and you can't buy it because you only have 0.109 and you don't know it and people will not understand.

Do you find 0.1255 easier to read than 0.125501?
 - not personnaly
Should we kind of standardize the options (4, 6 and 8 digits) for all clients?
 - yeah, but with the floor function
I deliberately left the option of 2 digits out, because we're way past the "0.01 is equivalent to a penny/cent" era. Do you miss it still?
 - no it should in fact be set to worth 0.1 cent at all time and folow mtgox
Which option should be default?
- having a floor function witch floor to the 0.1 cent depending on the value of BTC

sry for english!