Today Y! Shopping rolls out a recommendation engine, licensed by ChoiceStream. I checked it out, at Yahoo! Shopping – Gift Finder and randomly tried to find a housewarming present. I got nothing.
Then I looked at the source code for the resulting page, which had lines like:
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
Bleah. Maybe once it’s out of beta it’ll work on a Mac.