@papa-pepper, wow... YES!

Seems to me one of the tools lacking on Steemit is a way to organize content better. Not only is what you suggest an excellent idea, but from what little I understand about coding, it would not be super hard to implement if it were done as an extension of organizing tags better.

Most web sites with a lot of changing content have a "tag cloud" somewhere. Whereas Steemit does list tags on some pages, it's really not that well organized. Maybe "communities" will fix this? I don't know. I just wish we had more "fixed" top level and secondary level tags... for example, we might have "cryptocurrencies" as a top level tag, then "bitcoin," "steem," "ethereum" as secondary level tags... it makes browsing by interest FAR easier.

Getting back to your specific suggestion... categories are basically "disguised searches" that return specific results. I don't think it would be horribly difficult to add a search qualifier called (for example) "&user=papa-pepper" as a user option... be it from your profile page, or from a general category page.

Organizing tags better would also make it easier when you're creating a post and wondering whether a tag you're using actually exists, already... especially if the developers to make it so there were a "hot pre-fill" (lots of sites use that) you start adding tags.

Thanks for a GREAT suggestion!