Ask HN: is there a Twitter hashtag reach vanity metric?
https://news.ycombinator.com/item?id=1296622Let's say Subway does a Twitter campaign using the hastag #hooraysubway. Is there a site where you can input a hashtag and see everyone who has tweeted it and sum their followers?
This campaign "reach" number is mostly a vanity metric, but could be useful for justifying costs to brands.