Others are looking for something even more serious.
MM stands for marriage minded, so you should only contact that individual if you are ready for a very long term commitment.
BDSM or SM means that they are looking for some kinky sadomasochistic fun.
One abbreviation that is showing up more frequently on dating sites is GGG.
This abbreviation, coined by sex columnist Dan Savage, means Good, Giving, Game, meaning that you are willing to indulge a partner’s fantasies, even if those fantasies might not be your exact cup of tea in the sack.
Usually non-smokers indicate that they are seeking a fellow non-smoker.
In addition to letting you know a little bit about themselves, online daters use abbreviations to let you know what type of person they are looking for.