What is RefTagger, you ask? Here is what the website says:
RefTagger is an amazing, free new web tool that instantly makes all the Bible references on your site come alive! Bare references turn into hyperlinks to the full text of the passage at Bible.Logos.com, making it easy for your readers to access the text of Scripture with just a click. Even better, RefTagger brings the text right to your readers by generating a tooltip window that pops up instantly when they hover over the reference. You can also have RefTagger add an icon that is hyperlinked to the passage in Libronix—ideal if many of your readers use Logos. So if your website says, “One of my favorite verses in the Bible is Romans 8:28,” RefTagger will instantly turn it into this: “One of my favorite verses in the Bible is Romans 8:28.”
If you ever reference Bible passages on your blog (and you probably should every once and awhile) this little plug-in is a great addition to your blog. It will be a welcome improvement for your visitors who will not always have each passage memorized.