By Midgardsormr.Sammitch 2010-01-21 15:56:42
I believe this falls under the domain of 'a FFXIAH API' which has been requested before, and never met with much enthusiasm on the part of the devs. I believe the main reasons given were the extra load that would be introduced to the servers, and the lack of any potential increase in traffic [in fact a potential decrease] which hits the advertising income that keeps the site afloat.
My suggestion would be to grab all your members' playerIDs and write a script to scrape the necessary info off their profile pages and put it in your database. Just keep in mind that scraping in moderation is generally OK [ie. once a day], but most website admins will ban your IP if you're trying to scrape all your members' info every time you reload your page.
Of course, this all assumes that everyone in your LS is signed up for both the LS Community, have an FFXIAH profile linked to it, and have said profile set to public.
Personally, I think it would be easier to write a front-end that your members can log in to to update their own information with the motivation of "if you don't keep it up to date you don't get drops.".