The temporary amnesia you get when texting someone with a question or comment, and having them reply several hours or days, long after you've forgotten what it was you asked them. This also works in chat conversations where the person replies long after you closed the chat window.
To use a smart-phone to text your booty call instead of having to talk to her. Don't want to hear that annoying voice? Text her some ascii roses ---->--->--@ and turn on the charm.
Send one text to multiple women in your contacts list to secure some action for the night, possibly back to back.
Textnsex right to the chase instead of yapping all night to just one female. A few texts throughout the day such as "hey baby", "how was your day", and "are you drunk, I'm cummin over" will get you laid likity split.