Usually your blog entries are ordered according to the date on which they were published. You can however also order them according to your wishes by altering the time tag. It’s a good idea to bump posts which have proven to be popular among readers to the top of the page from time to time. Note that the posts will not appear as newly published in the feed, but they will be the first thing a reader sees when he or she clicks on your blog’s title.
Here’s how to bump a post to the top of the page:
1. Go to the most current blog entry and click on edit. Under the section “Publish” (at the top, on the right) you will find the time tag. Note this time.
2. Go to the post to be bumped and click on edit. Again look for the time tag under the section publish and edit it. For it to appear at the top, the time tag must show a later time than the current number one.
I sometimes put this post (Mach Cone) at the top of the page because readers seem to enjoy the picture in it (and because I love it as well, it is physics and math come to life and in action).
While we’re at it, check out my sidebar for the “Posts I like” widget. Add it to your blog as well if you like to help out bloggers who have created great content.
Metin's Media & Math 
Thanks for this very useful tip. I don’t know how it happened, but my most recent post was published with last month’s date on it, so had got behind a couple of older ones … with your help I’ve now moved it to its rightful place at the top of the page.
Regards, Jennifer
Hello Jennifer, I heard about that glitch, sometimes the time tag gets messed up. I’m glad my post helped you correct that. 🙂