Querying Agents in Other Countries?

Why would it be frowned upon? With technology as it is you are never likely to meet your agent/publisher. From my experience being an expat writer in Asia, agents like the idea of writers from new regions, if they are good enough, sure, it might work as an advantage.

So long as the work you are offering is marketable in the country the agent operates in, there is no reason not to.
I know of many writers - some on this board - who have agents in different countries.
A few UK agents specify that they do not wish to for with ex-pat writers, but most are OK with it.

There's no problem with it, but be aware that the UK querying system can be different to the US one (a lot of UK publishers request covering letters and synopsises, not queries).

I know here in the US, agents get 15% for domestic sales and 20% for foreign. If I decided to go with an overseas agent (assuming my book would have overseas appeal), I'd have to see how the percentages get distributed.

I should probably JFGI.

I don't see anything wrong with it, but prepare for some surprises. I submitted to the Chicken House contest and they asked for a chapter outline. Never heard of that in my life. Turns out it's just a few summary sentences for every chapter in the book!

I'm the other way round to you

I'm in the UK, my agent is in the US.

They don't care where you live (hmm, maybe if you only get online once a month....) - they care whether they love your book and think they can sell it.

I'm also the other way around. I live in the Netherlands; my agent lives in the US. It hasn't been a problem. He called me to offer rep and since then we've used e-mail. (Also, since I get up late and he gets up early, we're practically in the same time zone!)

I'm in Canada, my agent is in Germany (I'm bilingual). As I went through the process of finding an agent, all the agencies I contacted were fine with accepting the MS by email, even the ones who stated on their website they only accepted MS by mail - one thing I had been worried about.
We worked out the contract so that this agent only rep's work I write in German.

I will be looking for a Canadian or US agent to rep my English language MS. Maybe a bit convoluted, but this approach seems to make the most sense to me.