I've done a bunch of geo-dispersed SharePoint deployments recently, and most of them make use of the Global My Sites capability. This works very well, basically by redirecting users to the correct Web Application based on Audiences. Sure there are some limitations within the My Sites, but none that make the geo-distribution of them a poor compromise. However the problem with any solution in this space is the need to manage multiple Farms, and more importantly multiple SSPs. For the My Sites scenario you need a profile import at each SSP, or make use of a "hard to get" tool.
Great news today is that that tool is now available as part of the v2 release of the SharePoint Admin Toolkit, which also features guidance on running multiple SSPs for availability (which you should be doing anyway, but until now has been poorly articulated).
You can check out the toolkit at:
SharePoint Administration Toolkit 2.0 is Now Available! - Zach Rosenfield's SharePoint Blog
Print | posted on Friday, August 29, 2008 1:39 PM