Foo was here

This is nothing per se. Just a test post to investigate web graffiti.
It shouldn't vandalise the site directly but, if it does, I'd better be the guy who wears it!
(So, any blogspot administrators, I'm doing this to myself!!)

OK. Let's see....

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How it works is that the target site is linked to, and the grafitti is overlaid (ie you only see the damage from the grafitti link). FWIW, the results of my wickedness can be seen here
As a means of annotation, the technique has possibilities (especially as SVG becomes more widely supported). However, I think this example is a little primitive.