General
Use the General sub categories, this category will probably expand as time goes on to cater for more non specifics.E-Liquids
This category is all about e-liquids if you want to specify we have the Mixology category for that.Hardware
Use the sub categories to discuss anything related to vape hardware.Reviews
Reviews will be split up into their respective sub-categories for better accessibility.You could use [REVIEW] at the start of your title if you want.