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Hashtagify [hashtagify.me] allows people to explore popular Twitter hashtags and, in the near future, also the content related to them.

Each hashtag on Twitter is assigned a popularity rating, ranging from 0 to 100, where the most used hashtag is assigned the value 100. A user-selected hashtag is displayed inside a red circle, of which the size depends on its relative popularity. All related hashtags are displayed in blue circles. The pairwise connectivity is measured as the percentage of tweets that use both hashtags: the stronger the correlation, the thicker the grey connected line.

One can also explore how two related hashtags share correlations by selecting the "Expand focused hashtag" option on the upper right corner of the page. With this option, the top correlation for a given hashtag is shown with pink links, while tweets using both hashtags will also be shown. If some hashtags are among the top 10 correlations for both the selected (red) and the focused (green) hashtag, they have both grey and pink links.