7. Leave plenty of space
Not everybody uses the Twitter retweet button. Many folks still like to add their own comments to retweets, sharing via the old- school RT @ or “quote tweet” method. Tip: start thinking of tweets as 100 characters or less. This leaves plenty of room for a link or an image, and some extra room for old-fashioned retweeting.
9. Have a short and
sensible username Twitter allows a maximum of 15 characters for usernames but the longer yours is, the more awkward it is for people to retweet your messages. No problem: you can change your username at any time.