Lifehacker Code: Texter (Windows)
Texter saves you countless keystrokes by replacing abbreviations with commonly used phrases you define.
Unlike software-specific text replacement features, Texter runs in the Windows system tray and works in any application you're typing in. Texter can also set return-to markers for your cursor and insert clipboard contents into your replacement text, in addition to more advanced keyboard macros. Did we mention it's free?