The worst thing I unknowingly did when I joined GO was to use an underscore (Walkabout_B) in my username.  It lead to a dysfunctional e-mail system using my buddies list and a terrifying fear of having to delete my entire profile and history in order to correct the problem.

THANK YOU for the new profile option to change a username!  This solved my dilemma though there are a few side effects.

BEWARE!  When I changed my username I did loose two profile attributes.  First, my entire Buddies List was wiped out.  So be prepared and jot down your current buddies.  Second, I lost my Events Lead list.  Though, I was happy to see that the events I lead only migrated to the Events Participated list and did not disappear all together.

Has anyone identified other issues?

I also lost my buddy list when I changed my profile name but I have been able to recreate it one man at a time.. 

This is one of those functions that we offered in the recent upgrade due to many member requests. The user name is what held all of our other databases together [poorly designed, I know] so I was always hesitant in offering this option. 

I made sure our forums database would not be impacted but I did not realize this would affect the buddies system and now the Events Lead display? I contacted Tech Support who told me this will require a lot of research to find out which database tables are impacted.

In the meantime, I now have placed warnings next to the user name fields. I was told by our Tech Support folks you can revert to your old setting if you wish by changing your user name back to what you had before.