"Set default action" for a contact doesn't work.

[buyshirts]

I can't seem to get it to do anything

 

[zkSharks]

You're not alone.

I believe it should change the default reaction to selecting that contact, for example when using the 'Person' homescreen widget or selecting them in the favorites or recents lists. I just tried it, and I can't get it to do anything noticeable either.

:-\