LifeHack.org posted this article earlier today:
10 Weekly Ten Minute Practices to Boost Work Productivity
One in particularly stood out for me:
Compile boilerplate text
We all work with content that can be made into boilerplate text, whether it’s HTML code, canned email responses, blog post templates or custom signatures. Use a tool like TextExpander or Texter to create shortcuts for these blocks of text. Bonus: TextExpander also automatically corrects common typos as you write.
This is something that I've been doing for a while and it saves me a LOT of time. It's not just for things like boilerplate emails or other documents, either.
I use boilerplate text for lots of other things, like php includes and redirects. I never seem to remember the proper format when I need to, so instead of having to Google it for the five hundredth time, I just type "phpinc" or "phpred" and the code gets entered automatically.
Textexpander is great for this, and once I've checked the code when I set up the snippet, I know it's correct every time.
Another thing I use this for is to fill in variables when I'm writing an email to send out through Aweber. If you've ever received an email that started with "Hi {firstname}" you know why it's important to double-check those variables. When I type "fnf" it automatically expands to {!firstname_fix} and I know it's right every time.