I know every character count, like for me i used URL shortening services like bit.ly to reduce long URLs into small tiny forms. like Google launched its Goo.gl short URLs, and Youtube follows Goo.gl steps by introducing its URL shortener service, Youtu.be is exclusively used for Youtube Videos. besides saving some spaces it also help to reduce spamming activities.

Developers can take advantage of this feature by adding more new things such as show thumbnails, embed videos directly and do real time tracking on video spreading.
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