You know you spend too much time on your testvB when...
... you have more boards than members. Which, in my case, is true - I've got more testvBs than actual members

(well, I don't have a public board up yet, so I guess that's why :lick

But, I've got quite a number of testvBs running at the moment, mainly to make sure that some things don't clash after I have heavily modified the files.