the other day i opened my delicious page.. and to my horror i discovered that all the bookmarks I added in past few months had one tag with all tags concatenate

the other day i opened my delicious page.. and to my horror i discovered that all the bookmarks I added in past few months had one tag with all tags concatenated by a space. it appears that delicious started accepting spaces in tags (instead of using them as delimiter like they have for years), so all the bookmarks i meticulously tagged were useless and i had new tags such as "programming computerscience learning" etc.. had to go through every bookmark and re-add all the tags + delete the monster tags that got created as a result. so.. had to do it couple hundred times. apparently now, only a comma delimits them. why allow spaces inside tags anyway? who made this decision? what good are tags such as the one above? This on top of having to re-install all my browser plugins until i found a version that supports auto-complete again.. seems like delicious was taken over by a bunch of jr engineers and no one at Yahoo gives a fuck about things such as backwards compatibility.