Most cakes, if frozen and defrosted properly, will still taste fine.
Yes you can freeze cake mixes but when it gets defrosted and baked, it won't have half the flavor or moistness. You can also store an unbaked cake mix in the freezer. And, you can freeze a baked cake that was made with a cake mix.
Yes. You can freeze dipped cake pops or naked cake balls (before they are dipped in chocolate). When you are ready to use/decorate, just thaw and eat or decorate. Although I recommend baking cake ahead of time, freezing a 13x9 pan cake in 4 portions and thawing portions as needed to make the cake pops fresh.
Sponge Cake freezes quite well! Just be aware that it can go soggy when defrosted. I wouldn't use a microwave to defrost it either, just leave it out at room temperature for the day. Hope this helps!
Yes anything can be frozen at the right temperature, the coldest thing ever frozen were atoms at a little above 0 degrees Kalvin.
Brown sugar will vary the taste.
Yes.
Yes.
A frosted cake will stay fresh overnight without being stored in a container. In fact, the fat and moisture from the frosting will improve the cake.
it is to give the cake a sweet taste instead of a bitter pale taste.
Quite honestly, if you are going to the trouble to make a cake, it is better to make sure that the ingredients for the cake are as fresh as possible (and certainly within their use by date). If you use old fruit the cake will not taste as good as it should do and it may even taste bad (especially with old, rancid nuts).
Pigs are not very picky eaters despite the reality that not all foods are good for them. Pigs will eat cake and anything else that people like, but they thrive best on fresh fruits and vegetables.
No but you can use it to make frozen yogurt cake.