Just discovered a very neat tool for playing around with small UML diagrams online. I was pondering extending the social bookmarking model earlier in the week, to make it possible to identify duplicate tags without confusing unrelated links. For example, a page tagged with ‘plant’ could be about machinery, or trees. yUML looks ideal for this kind of thing, drawing this diagram:
…from this simple markup:
# Social Bookmarking Diagram
[<<Entity>>;Tag]*-related to*[<<Entity>>;Tag]
[<<Entity>>;Tag]-[note: Tags could be ambiguous without knowing what other tags they are related to{bg:cornsilk}]
[<<Entity>>;Tag]*uses-used by*[<<Entity>>;Tagger]
[<<Entity>>;Tagger]*tagged by-bookmarked*[<<Entity>>;Link]
[<<Entity>>;Link]*applied to-tagged with*[<<Entity>>;Tag]
I can see this tool being really handy. If you want to give it a try, there are plenty of samples to get you started.
Notes from a small field 
Looks interesting if you only need to make a short simple UML without the fuzz of starting Eclipse and create a project etc…
Thanks for mentioning yUML, nice to see a fellow UK dude using it :)
@Michael, definitely quicker for small snippets, and I quite like the simple text notation compared to driving a mouse all over the screen to achieve the same thing. Would be nice to be able to import into Eclipse when moving on to code gen…
@Tobin, no problem, it’s nice to be able to go scruffy after using RSA!