Here is the FAQ from Frappr:
  16. *The map doesn't show up!*
If you're on a Mac, Safari and IE on Mac probably won't work right now.
17. *Which browsers are supported?*
We test the site with Microsoft Internet Explorer 6.0 and Mozilla Firefox
1.0.7.    18.

*Mac support?*
We're trying to get our hands on a test Mac. We've heard Mozilla Firefox on
Mac works.

 So maybe it works with Macs and maybe it doesn't.........
 Cheers,
Doug

 On 10/26/05, Thomas Myers <thomas.myers@xerox.com> wrote:
>
> Errr... I didn�t have a problem using safari on my G4 to put myself on the
> map....
>
> Tom Myers
>
>
>
> From: Doug Alcock <doug.alcock@GMAIL.COM>
> Reply-To: Doug Alcock <doug.alcock@GMAIL.COM>
> Date: Wed, 26 Oct 2005 10:04:26 -0400
> To: <vanagon@GERRY.VANAGON.COM>
> Conversation: [Fwd: Re: [VANAGON] Add your van pic to a google map of
> listmembers]
> Subject: Re: [Fwd: Re: [VANAGON] Add your van pic to a google map of
> listmembers]
>
> You're right --- it doesn't work for Macs and I should have mentioned that
>
> On 10/25/05, Mike Collum <collum@verizon.net> wrote:
> >
> > Hey, Doug,
> >
> > It looks like those using MACs are out of luck.
> >
> > Mike
> >
> >
> > -------- Original Message --------
> > Subject: Re: [VANAGON] Add your van pic to a google map of listmembers
> > Date: Wed, 26 Oct 2005 09:43:09 +1300
> > From: Andrew Grebneff <andrew.grebneff@stonebow.otago.ac.nz>
> > To: Mike Collum <collum@VERIZON.NET>
> > References: <1ed6d210510240812k693eacebk7054230cfaed363c@mail.gmail.com>
> > <435E5DA1.3020803@verizon.net>
> >
> > >I really LIKE this map of listmembers. I hope the entire list decides
> > >to participate!
> > >
> > >Thanks very much, Doug.
> > >
> > >Mike
> >
> > Might if the website worked for all of us...
> > --
> > Andrew Grebneff
> > Dunedin
> > New Zealand
> > Fossil preparator
> > <andrew.grebneff@stonebow.otago.ac.nz>
> > Seashell, Macintosh, VW/Toyota van nut
> >
> > HUMANITY: THE ULTIMATE VON NEUMANN MACHINE
> >
> > DEMOCRACY: RULE BY THE LOWEST COMMON DENOMINATOR
> >
> >
>