Here's a popular question: "How do I remove spaces between gadgets on my sidebar?" I have seen this question being asked many times that I think a proper straight-forward tutorial is needed for this matter for future references. One might want to remove spaces between gadgets for various reasons. A common one is to use a picture gadget as a title, so the picture gadget needs to be really close with the next gadget to serve as a title. If you're interested in reducing space between your blog posts, see this tutorial instead.