I just noticed that, if I assign a *category* - not a tag - to a post, then click it on my blog, it takes me to the WordPress URL for that tag. Surely this is not right? Categories should list all the posts on my blog for that category, while tags should go to the WordPress tag search?
For example, if you go to http://thefriendlyghost.wordpress.com/2007/10/11/a-double-decker-bus-is-this-big/ and click the 'copywriting' category link below it, I would expect it to go to http://thefriendlyghost.wordpress.com/category/copywriting/, because I specifically assigned it to that *category*, not that *tag*. Instead, it goes to http://wordpress.com/tag/copywriting/, that is, the tag search instead of the category.
This strikes me as dumb. I always understood the difference between categories and tags to be that categories were blog-specific but tags were for wider searches? Unless it's me that's being dumb here?