You know, everything needs maintenance to run smoothly, so does your blog. A blog that is taken care of will have a good performance and readers find it comfortable to browse around. I cannot tell you how many times I encountered a blog that has good contents but is infested with spam. Such a shame! Of course you don't want to be that kind of blogger who doesn't care about his/her blog. If you haven't done any maintenance yet, this is a good time to start. Trust me, it is so worth it in the long run. Here are some things I do in regular basis, just to give you some ideas.
Check for broken links
It is important to make sure that all links on your blog are live. Dead links are annoying, well no one likes to be in a dead end, right? The good news is, there is a handy tool which can help you with that. My favorite is deadlinkchecker.com It does a thorough checking and it doesn't require lame captchas, for those of you who are new here, I hate captchas.