Twitter Tips: How And Why To Use Hashtags (#)

CIO - While you can use Twitter's search tool to find specific people, companies, and their messages ("tweets") on the service, Hashtags allow users to sort topics into useful categories to revisit later.

If you've spent any time on Twitter, you've probably seen a hashtag before. A "#" symbol sets off a hashtag.

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Here's a look at how to utilize Hashtags to organize information that you contribute and consume on Twitter. As the tweets pile up, the extra time you take to thoughtfully categorize your tweets with a hashtag will help the greater Twitter community (and you individually) make the most of the service.

The story behind Hashtags

Twitter (the company) didn't create hashtags. The Twitter community's early adopters came up with the idea to put a "#" in front of topics to add context to tweets. The tag would also help filter and sort them out for future readers.

According to a Twitter fan website, the hashtags achieved significant notoriety with Twitter users in 2007 during the San Diego fires, when users designated their tweets with "#sandiegofires."

The trend to use hashtags led to the community-driven site hashtags.org, where a semi-official index of Twitter's hashtags now resides. To access the site, Twitter users merely need to opt-in (for free) by following @hashtags on Twitter.

If you're writing a tweet about a topic you think might have a unique hashtag assigned to it, you can visit hashtags.org to find it.

When you arrive at the site, choose "Tags" on the right-side menu. After the menu drops down, choose "directory."

Hashtags are listed alphabetically, but the directory won't be helpful unless you have a lot of time. It's jammed with obscure-looking hashtags (many are acronyms). As a result, you might have better luck searching the site for your hashtag of choice.

Say, for instance, that you want to assign a tag to a new product that Google released. To find the official hashtag, type "Google" into Hashtag.org's search bar. It will return results with a list of Google-related hashtags.

The site also keeps analytics for popular tags, showing recent messages in which people used the tag, the people who tweeted it, and related tags.

How Hashtags Are Born

The Twitter community organically and collectively decides what a hashtag should be as it pertains to a certain topic. Third-party sites, such as tagalus and HashDictionary allow Twitter users to define hashtags. HashtagNation facilitates discussions around how certain hashtags should be defined and formed.