Just wanted to add a few things... I have also never had any pest issues due to using blackstrap molasses, and I often use quite a bit more than a teaspoon per gallon. As far as pests go, the main one I can think of that may be attracted to molasses would be certain ants. I mix everything in another room, downstairs and my tent is upstairs. Just make sure if you spill any that you clean it up. Once the molasses is mixed thoroughly into your water or fertigation solution (all you have to do is shake it up) it just isn't very appealing to ants. Just about as soon as you pour it onto soil the microbes, particularly bacteria, will go on a frenzy for the simple sugars, reproducing until they are all but exhausted.
Honey is quite a bit different than molasses and not so good for plants; it has much less in terms of nutrient content, and honey may act as an antimicrobial, partially due to the presence of hydrogen peroxide. Honey also tends to be a bit more expensive.
Blackstrap is really what you want to use where possible, due to the concentration of minerals and particularly potassium. Potassium\potash is naturally lacking from many organic nutrient sources including guano, manures, bone meal, etc. You can usually find blackstrap where the health foods are, as opposed to in the baking aisle. Popular brands include Plantation Blackstrap and Brer Rabbit. Grandma's molasses is a popular brand for baking, but it isn't blackstrap.
Earth Juice sells it's own Hi-Brix molasses for plants, as well as Catalyst which is essentially a carbohydrate supplement that contains molasses, oat bran and yeast. You may notice molasses listed as an ingredient in various organic plant foods.
Again, it is important to remember, plant roots don't absorb sugars that you apply to the soil. It really isn't going to make your buds any "sweeter" or anything, at least not directly. Any limiting nutrient (nutrient a plant needs that isn't plentiful enough) is going to hinder a plant from growing to it's full potential in terms of yield, smell and even taste.