using ingroup as identifier does the same thing.
and if you want to make it silly easy, you can actually make the web form url different for each by adding a get value that's different for each. still one web page catching it, just a different variable being passed. and no coding changes to vicidial makes it "upgrade safe". (which can also be done just by identifying the in-group without a special get variable at all, because that's already passed)
you could svn co daily without screwing it up (and when matt fixes a bug ... *poof* it's fixed in your system
)