Bottom: the person being spanked.
LGBTQ: lesbian, gay, bisexual, transgender, and queer or questioning.
Lurker: someone who reads a blog but does not comment (which is called lurking).
OTK: Over The Knee, with the person being spanked face down over the knee of the top.
Top: the person doing the spanking.
Vanilla: the sexuality that society expects. Vanilla sex, for instance, is typically penis-in-vagina. This is in contrast to kinky sex (whether it involves spanking or other activities). This is not dismissing penis-in-vagina as boring or irrelevant; many people enjoy both spanking and vanilla sex. The term “vanilla” is, in short, descriptive, not judgmental.
Are there other terms you’d like to see? Please let me know, at firstname.lastname@example.org.