Hashtags module provides alternative way of adding tags to node.

Keywords that start with a pound (#) sign are called hashtags i.e. #drupal7 or #drupal6.

Clicking on the hashtag will lead you to a thread of nodes that have that have applied that hashtag.

The syntax of hashtags you can check in Limitations on Hashtag Characters

This way of adding tags was taken from Twitter.

Sponsored by Archer software

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