This is about as low level as you can get, Antigua is not the biggest market out there since it is basically a remote island with 85,000 inhabitants and nearly a third of them live in St. Johns, which is the largest town there.
You are really going to be hard pressed I think unless you can find a nightclub or dating agency (and why wouldn't they simply buy the .com.ag?)...I would dump it for whatever you can get.
You can have the best keyword in the world, but if no one is around to buy off you then that does not matter. It is not a bad domain, your choices are simply severely limited unless someone can do some major branding and get it recognised just like the URL shortener did with no_url_shorteners
Before going after more of these smaller market names I would suggest checking out first the
World Factbook by the CIA and then wikipedia, to try to find out who the demographics are...if no one is there then you can almost be assured that it has no value except in the rare case of Tuvalu which has international meaning for its extension
Both resources are wonderful for figuring out population densities, trade links, towns and cities and all other kinds of useful information like Background, primary and secondary languages, terrain and natural resources, all kinds of information about age and race and other stuff about its people, the governments, economy, communications, transportation, military and transnational issues...
Why is this important?
Lets say you are trying to sell to someone in Africa for $100 a random name, you will quickly figure out not to even bother with 98% of the population who only earn $300 a year in a certain area like Ethiopia and instead concentrate on those with the wealth in another region like Johannesburg, it might be common sense but it always helps to have information in front of you
Love.net.ag = barely worth reg fee.