Run a giveaway for users who retweet your posts.
Run a giveaway for everyone who follows you on Twitter.
Reward people for replying to your Tweets with a prize draw.
Mention + Hashtag
Collect Twitter posts which feature your brand mention and campaign hashtag.
Encourage interactions and grow your audience and brand awareness with a Twitter Giveaway. Pick a winner from among users who retweet or reply to your posts, or from among your followers. You can also pick a random winner from among the users that mention your brand and publish content with your campaign hashtag. Do it all in an automatic way, and obtain a certificate validating the transparency.