I use a toaster oven all the time for my cooking with zero problem. I live alone, so using the full size oven just seems wasteful and impractical when I cook 1-2 servings at a time. The toaster oven heats up the apartment less and uses about 1/14 of the electricity(1000 Watts vs 14 kW). I have cooked 4 chicken drumsticks (about 5-10 minutes longer than the recipe recommends) in that thing with ease, and mine is just a cheap Walmart model.
The thing is basically a counter top oven and if you have an electric oven (like myself) it works on the exact same principals, just on a smaller scale. Just be careful that nothing touches the sides of the ovens, don't cook anything that will splatter (fire hazard) and clean it out regularly (again, fire hazard) and you should have zero problems.
