Are plastic (vs metal) immersion blenders safe for hot mixtures? I have a braun stick blender that I bought about 10 years ago. I love it because it's really versatile and I can make puree soups, etc. I usually will stick the immersion blender into the pot of hot mixture to puree the mixture. Is this safe?

CLARIFICATION

Is putting plastic in the hot mixture safe?
Short of the danger of splashing hot liquid on you, or the standard immersion blender dangers of having it slip and hit you, there's no additional risk with using immersion blenders on hot mixtures.  Making hot soups creamy is pretty much exactly what they are designed for.