I left feedback for a seller on ebay, and htis popped up:

Warning! Using a second email address (an "alias") to leave negative Feedback for another or positive Feedback for yourself may result in immediate suspension of your eBay registration. The use of an alias account for any purpose regarding Feedback is strictly prohibited.
Thank you for your cooperation.

what does this mean? also, in answering this Q, be as specific as u can, im still a bit ebay illiterate lol thanx

i left feedback for a seller on ebay, and htis popped up:
Warning! Using a second email address (an "alias") to leave negative Feedback for another or positive Feedback for yourself may result in immediate suspension of your eBay registration. The use of an alias account for any purpose regarding Feedback is strictly prohibited.
Thank you for your cooperation.

what does this mean?