Don't keep asking for my megaphone
If your content is good or your post is interesting, people will share it. Asking for reposting or retweeting too often or on bad items, can get old and irritating. Avoid, if you can.
"Saying 'Plz RT me' is a major turnoff. If your content is good, you'll be retweeted," Dungan said.
If you have content that someone specifically might want to share, contact that person directly. But, again, don't do this too often.