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I may even have a look at the code some time to work out how it could function. Just needs to scan my feed for tags and show a list of the top ones, then filter by that. It does similar things for the global feed.

BTW Here's a tip. You can see what another person's feed looks like by adding '/feed' to their URL, e.g.

https://steemit.com/@steevc/feed

good advise, checking this! Thanks @steevc