If on the "Send Ether" page I try to send a value less 1 wei (which is the smallest amount of Ether possible), such as 0.1 wei (i.e. 0.0000000000000000001) and then I enter a valid recipient address, it gives me a tooltip validation message of "Failed estimating balance, please try again", as shown below. Could we make the error message more accurate, such as "Amount must be 1 wei or greater"? i.e. in this case i don't think the user cares to know that we tried to estimate their new balance behind the scenes or that it failed, they just want to know that the tooltip appeared because they entered a value less than the smallest allowable value