Sometimes, what you have to say just doesn’t fit in 140 characters. For those occasions, Twitter users have resorted to several makeshift solutions: Some are marking their related tweets with numbers (1/7, 2/7, etc.), creating so-called tweetstorms, and others are simply replying to their own tweets, which has to be done manually in Twitter’s official app.
Now, popular iOS/OS X Twitter client Tweetbot has a solution called Topics. Introduced in the 4.3 version of the app, Topics let you easily tweet a group of related tweets, automatically adding the same hashtags, if need be.