Do you have any idea how much time an average Joe spends in front of Outlook? It is easily 2nd most popular (or should I say 'used'?) application after web browser.
I'll second this, and could provide some hard data if I cared to run the reports.
At RescueTime (my startup-- a tool for measuring exactly how you spend your computer time), communication tools (Outlook/webmail and IM) ALWAYS rank in the top 2 or 3 apps.
If Xobni can demonstrably reduce the amount of time required to effectively use Outlook (or email in general) by 15 minutes per day, what do you think that's worth to a company with 10,000 information workers?
Yeah, just like heroin, regular work and sex with old people.
Have you even tried bashing things you didnt try or did you just do, what you condemn?