可能性へのプラグイン
WordPress.com のすべての有料プランで利用可能な何千ものプラグインを使って、新しい機能を追加したり、お気に入りのツールを接続したりできます。
winners
4 プラグイン
Pick Giveaway WinnerRandomly select a winner or winners from the comments of a giveaway post.
And The Winner Is...Manage your product giveaways by marking posts as "contests" and selecting a random comment from a contest post as the winner.
Meetup Winner!Give away prizes and swag to a random attendee who RSVPed to your meetup!
Random WinnerThis plugin works with contact form 7 also