Which of the following best characterizes the length restrictions on Twitter and other microblogging platforms?

a. They require a different approach to writing, but audiences appreciate the efficiency and clarity of well-crafted short messages.

b. They don’t have much effect on writing; if your message won’t fit in a single tweet, simply break it into as many tweets as you need.

c. They severely limit Twitter’s usefulness for business communication.

d. They are driving away much of the readership that was originally attracted to Twitter.