It's used a lot in India, and on any site that has many users from India, so my attitude is "suck it up cultural fascists". There's a bunch of loan words in English from India, and a few more aren't going to hurt.
(Edit: this sounds a bit grumpy, it's not meant to be.)
I've also only ever seen it in Indian sourced English language news -- and I have to look up what quantity it refers to every single time because it simply doesn't exist in any other English language using population I'm aware of.
One of the things missed by the "US / UK english only" crowd is that there are a bunch of subtle differences that have nearly opposite meanings.
Tabling something means either put it forward for discussion, or remove it from discussion. A moot point is something that's open for discussion, or something where discussion is pointless.
At least when someone uses lakh or crore I know I don't know what they mean and look it up. (and look it up is highlight + right click and select "search").
Good points on the opposite meaning idioms.
Perhaps the most right way to deal with things is to just use the number, or use scientific notation?