Del.icio.us will now let you do it!! They're calling it tagrolls.
John at Library Clips, who is so on top of things that he carries oxygen because of the elevation, has the scoop and thinks of us, the kooky category community, in his post. A tip of the hat to you, Sir!!
This is great news for people who use del.icio.us to file their blog posts within tags, as their blog software may not offer categories…since tags are usually considered more specific than categories, you may use del.icio.us to tag your posts even if you do have blog categories.I am going to try it forthwith (or as soon as I've blogged about Google Base being live, which it is, btw) & I will let you know what I think... I may even come crawling back with formatting questions. I am happy, of course, to host a discussion on the relative merits of this tool v. other tools for sidebar tag display.
Update: See the sidebar where there's a newly-installed tagroll. How, you ask?
Log in to del.icio.us, and head to http://del.icio.us/help/tagrolls
The formatting seems to be pretty comprehensive. Three sliders and a couple of color wheels. Here's what they do for you:
The "size" option slider controls how many of your tags make it onto the list / into the cloud. The other two sliders control maximum font size & minimum font size, to set the range of the change in size between frequent & occasional tags.
Using the color boxes next to the font sliders, you can also customise the range of colors that transition from frequent to rare tags to suit your template. Simply click the colored box to see the wheel & pick your color... or key the name straight into the box, I guess, if you know your colors that well!!
The "title" box sets the text that goes at the head of the list. I'm considering "All Categories" or something, rather than the default. You can also choose whether to display the del.icio.us icon on your site.
Now to the sorting of the tags themselves. Pretty self-evident, but the "sort" options let you organise your tags alphabetically or by frequency. The "flow" options let you choose either a list or a cloud - whichever format best suits your site. Finally in the "flow" department, there's a checkbox to toggle tag counts on or off. Tag counts are a useful supplement to the font sizes in the list in order to show the relative significance of the tags you're choosing.
Many thanks to del.icio.us for this great added feature. This will integrate the tagging / categories system that little bit more, & hopefully make it more attractive / useful / interesting and most importantly, dynamic. Now you can have a sidebar list that will accurately reflect the tags that you're using without constant template changes & 100% republication.
Try the tagroll out. If you have no idea what I'm talking about, see my 3 ways to categorise with del.icio.us, and the other category-related posts in Blogger Hacks - the series.