wow. that is some big list you have there :-)
well, blogmarks doesn't do anything but telling it's done, but imports nothing from the XML file and an XML of the rss feed. rss url don't work either cause it supports only aoms.
yahoo does work, only problem is that the rss goes only 15 links back, and yahoo doesn't support, as far as i saw, a continues import (or sync) through rss.
also find filangy igooi that u state in ur site that they support rss import, so i'll try them soon.
Linkagogo don't manage to extract anything from the xml file.
and this guy was trying to create a universal social bookmark standart, but i guess nothing came out of it.
so, so far, just partial luck. but i'll keep this question open for now.
thank you very very much.