I'm a delicious user and used to use a tag as you describe. I almost built this on top of delicious but decided against it as I didn't want to have to add the d

I'm a delicious user and used to use a tag as you describe. I almost built this on top of delicious but decided against it as I didn't want to have to add the delicious signup as a requirement and then have to explain what delicious was. I really like the idea of being able to use it without signing up - seems obvious now you mention it! Will look to add that shortly.