First of all: I like it, even it does mean more work for scripters and taggers.
I have a suggestion so one can use this feature more elegantly:
By clicking on the tag link in "My issues" a combo box should be filled with all the cachers in the list or the cachers should be listed on the tag site. This would increase speed of testing a lot, better than copying and pasting each single profile name from one browser tab to the other.
Regards,
Hampf