Typically people put it in Scottish beers--not because Scottish beers are brewed that way these days (and indeed, they haven't been for hundreds of years, according to Radical Brewing), but because Scotch (whiskey) has peat in it, so it makes some geographic sense. I love peated scotch but brewed a beer with peated malt in it and will never do so again (or at least, not for another few years, until I forget how much I didn't like it). It just didn't do it for me. But some people love it, so don't take my word as the final one on the subject. Typical usage is about 1-4 oz per 5 gallon batch (that is, far less than the normal usage for plain old smoked malt). You could possibly use it in a different dark beer--say a stout or porter--where its robust flavor might stand a better chance of blending in.