this is a stupid way of fixing a problem
Track how often hashtags that are added by you are used in tweets at this moment. You can select a specific language or just include all languages. The current popularity of hashtags is translated into a "speed" per hour for the current moment. If you wish you can also read the latest tweets which include the hashtag.
Hashtags are removed when they are used on average less than once per hour in our sample period. In case the maximum amount of hashtags (currently 50) is reached the hashtag with the lowest speed will be removed for a new hashtag.
Updates every 5 minutes...