I started a thread a few months back asking about the pros and cons of the three main different sites. In the end I went for Ancestry, as the shared public trees have proven invaluable to finding living relatives. But the one brilliant feature with FMP was a marriage match service, which would match up your named ancestor with several possible partners (presumably the people who appeared on the same page). I've hit a brick wall with some people with very common names, and wonder if the marriage match would come up trumps with an index number so I can order the cert.
The details:
George Morris (b. 1838ish) married Mary Evans (b. 1837ish) sometime in the period between 1856 and 1860, in the registration district of Pembroke (Pembroke Dock) or Haverfordwest (Milford Haven), Wales.
Obviously in return I'm happy to do a look up for something on Ancestry that can't be found elsewhere - perhaps if you want a family tree link. Any help appreciated!