InfoPath Resources URL
Blog
InfoPath Team Blog
http://blogs.msdn.com/infopath/default.aspx
Browser compatibility
InfoPath 2007 features that are unavailable in InfoPath Forms Services
http://office.microsoft.com/en-us/infopath/HA102105871033.aspx
All you wanted to know about browser compatibility
http://blogs.msdn.com/infopath/archive/2007/02/16/all-you-wanted-to-know-about-browser-compatibility.aspx
Users & Roles issue
Implementing Roles in Browser Forms
http://blogs.msdn.com/infopath/archive/2007/01/10/implementing-roles-in-browser-forms.aspx
InfoPath - Get the current user without writing code
http://blogs.microsoft.co.il/blogs/itaysk/archive/2007/04/05/InfoPath-_2D00_-Get-the-current-user-without-writing-code.aspx
Contact Selector