No you can't.
Bitly does not have access to your account. It's only used to shorten url's.
Yes, the Twitter character limit includes spaces and other symbols. However, if you have a URL and that is what makes you go over the limit, Twitter will automatically shorten it for you.
For efficiency. Advertisers, especially printed publications like newspapers, charge by the length of the article. Abbreviating helps to shorten the article and the cost of the advertisement. It is also much easier and faster to type the abbreviations for the words.
Bit.Ly is a web link shortener mainly used for Twitter. Unlike other web link shorteners, you can customize your link on Bit.Ly. You can also get email updates if someone uses the link. It is very useful on Twitter when you need to shorten your link if it is taking up to much words.
Your going to have to cancel the account and start over you cant change it or shorten it
you shorten it by etc.
You don't shorten 'it has'.
Vitamins can't shorten your height.
Bill Shorten's birth name is William Richard Shorten.
Chick Shorten's birth name is Charles Henry Shorten.
Patricia Shorten's birth name is Patricia Shelley Shorten.
Chick Shorten is 6'.