You want to send a message to someone via Twitter / Instant Messenger or SMS but cannot send because of the sending character limits? Twitter currently has 140 characters limits which means that you cannot send text messages with size of more than 140 characters at once which also includes the URL you want to send.
Instead why not make the whole text message shorter by using a service like TinyPaste which can accept your big bunch of text and convert it into a small url which you can send to your friends, who when accessing the url can find the complete message.
Just write down the message in the PasteBin and Submit it.
Once you access the pastebin entry URL , you will get the whole message with options to recopy or save the message in txt format to your computer.
