The developers at Firefox decided to truncate that text to 60 characters so the user won’t get a huge text box covering their screen whenever they hovered over an element with a long title attribute. In most cases, this would be just fine but I happen to be a big fan of xkcd, a geeky internet web-comic which uses the title attribute to add funny quips.

Using the Long Titles extension, you never have to dig around to read the entire title attribute again. Being such an open browser, I find it rather annoying that Firefox developers refuse to make it an option in about:config to change the cutoff limit for title attributes.