it confuse me too. not just yobit, many sig campaigns require personal message like that too, include this one, 777coin. but as i research the spreadsheet of 777coin and find out some high rank members use other personal message and still get payment, i wonder if it's allowed or not. if yes, i want to erase my personal message and join message campaign of others. i have asked izanagi about it but he never answer.
The guy was on YOBIT signature campaign which there was a clear rule that PM should be set to yobit.
In your case, 777coin also has a rule that your PM should be 777coin if you are enrolled in their signature campaign.
There is a separate pay for 777coin PM which allows people from other campaign to advertise 777coin in PM.
For example if you are in Bit-X campaign there is no rule there that their PM should be Bit-X so they can participate on 777coin PM campaign.
Did I explained it clear or did I only made it more complicated? LOL.
i understand u but u misunderstood me. i find out that some member of 777coin don't set their PM to 777coin, they use other PM, not for PM campaign, just to express their own feeling, or whatever they like. and they still get payment from 777coin. u can dig it in the spreadsheet. that's what make me confuse.