I get this question all the freakin time! People ask me over and over when I am addressing them about Twitter and mention hash tags. Why is there so much confusion over a simple # sign and a few letters?
I guess it all starts with the geek speak they like to put around it, huh?
A tag is a non-hierarchical keyword or term assigned to a piece of information (such as an internet bookmark, digital image, or computer file). This kind of metadata helps describe an item and allows it to be found again by browsing or searching. Tags are chosen informally and personally by the item’s creator or by its viewer, depending on the system. On a website in which many users tag many items, this collection of tags becomes a folksonomy.
What The Hashtag says:
Hashtags are a community-driven convention for adding additional context and metadata to your tweets. They’re like tags on Flickr, only added inline to your posts. Hashtags can be created by anyone simply by prefixing a word with a hash symbol: #myhashtag.
OMG, that is way too much geek-speak!!! OK, so let me de-geekify the Twitter Hastag for you…