When Mozilla launched Firefox 2, they included a built in spell checker, which is kind of awesome if you spend a lot of time entering text in a web-based email, blogging, or word processing application. But for some reason, the Firefox spell checker only looks at large text areas, like the body of your email or blog post. The title fields aren't checked by default. And that's why your blog posts and email subject lines always look so awful. (We'll admit this has bitten us in the behind a few times as well)

But it turns out that enabling spell check for all text fields is pretty easy.

1. Open up the Firefox configuration window by typing about:config in your URL bar
2. Type layout.spellcheckDefault in the filter box
3. Change the value from 1 to 2

That's it. Now open up any window with a text box and misspell a word. Firefox should underline it in red, and when you right click on the word you should get spelling suggestions.