In effect, a clickable Wordle which acts as a tag cloud, and dead easy to create and embed. I'm still working on this one (the tags are an automatic extract from my website home page, which clearly doesn't mention the iSeries enough). I think that even the smallest words in the tag cloud need to be legible! More information at tagul.com. Free of charge at the moment, though it may not always be so if used commercially. Good stuff.
If you are using an RSS reader and can't see the tag cloud, you need to open this item rather than just preview it.