You may spot this in the Internet Explorer Local Intranet Zone (under control panel->Security->Local Intranet->Sites->Advanced).
If you browse to that location, you’ll find it starts Money. A couple of examples of it’s use are:
Because Money is built on IE, these appear to be mechanisms within the program to launch pages from within itself, and it’s not because something external has infiltrated your machine.
You can delete the entry, but I have found that if you do so, it can reappear when running Money again.
A similar item "//@signup.mar@" can also be displayed when running Money (this has been witnessed in anti-spyware tools). This also seems to be part of Money, but related more to login type procedures.
Thanks to Tony Linguini & Money FAQs