I hold 20% emerging markets in my all-world ETFs (VWO at IB, maxed out EM in VIAC and also some Ishares emerging market small caps at CT).
I also have separate allocations in Ishares China A-shares (CNYA) and Ishares Turkey (ITKY) which tilts me even further in direction EM.
I’m now looking at Mexico (Ishares EWW), South Africa (Ishares EZA) and Brazil (Ishares EWZ) for my Christmas shopping :-).