Universal Inbox

Tom recently pointed me to Spaces which is calling itself a Java based Outlook replacement. Not only does it do email, calendaring, tasks and notes but it has a built in RSS aggregator. The news items appear in your space/Inbox. This is similar to News2Mail but there doesn't appear to be a conversion. I've downloaded and played with it and it's very cool (cool meaning fast, seemingly stable, works with my mail settings, easily configurable, etc.) but not quite good enough for me to switch to using it. A recent blog by the author of Spaces mentions that "...in the future meta-structured storage integrated within applications will become the norm, rather than the exception".