As a Chrome extension, Text Blaze can use the contents of the webpage you are on in your snippet.
For example, if you replied to an email in Gmail, the following Text Blaze snippet would pull in the name of the person you were replying to automatically (the bit after the `selector=` is a CSS selector):
```
Hello {site: text; selector=.h7:last-child .gD},
...
```
CSS selectors are much too technical for most users and this one in particular is quite ugly, but we are planning on developing higher-level functionality to make this much more accessible in the future.