Because I have a few blood relatives out there who say they read this blog, but who never comment, I'm linking to Jacqui's handy-dandy guide to commenting on blogs.* No longer should you fear to comment!
Feel free to follow Jacqui's method to the letter. Practice on her site until you get really good at it and have the step-by-step instructions memorized. Then come back here and fire away!
*Also because it's a funny read.