Tag Cloud

When I publish articles on Wordpress I can choose to add tags to my tag cloud. Should I do short/general tags/keywords or should I do unique longtails?

The articles are already optimized for long-tail keywords. The tags just add extra SEO benefits/search benefits on my site (as far as I understand).

Tag clouds are always good for SEO.

But more importantly, you need to restore the user-friendliness and proper vibe with the tag cloud.