Sadly, in my excitement to get a Mac buildbot slave up and running yesterday, I have overwritten my profile with a lot of file:/// addresses in the awesomebar and little else. The fabulous part of searching in the awesomebar is so much less when you have NO history.
This is because the master.cfg is set up to clobber and thus wipes clean the default profile as it does it's thing. Not so bad for a VM unittesting machine, kind of terrible for a human with poor retention for URLS thanks to a dependence on the awesomebar.
/me writes on the board "Never use the default profile" * 1000