Amen, brother. I'd really like to hear your take on the psychology of a mind that thinks changes like that that completely break APIs (Net::Delicious) is a good idea.

AVOS' new TOS specifically forbids any usage of the service by anything that falls outside of common web browser list and is not AVOS-provided software.

I was quite shocked about this condition when I read it.

Agreed that these changes shouldn't be made arbitrarily, but spaces as tag separators has always been my biggest frustration with delicious and is one of the biggest reasons I (to my eventual regret) ended up using Ma.gnolia back in the day.