A userbox is a small box that looks like this, and can come in many styles.
Userboxes are for decorating your userpage and to tell little details about yourself. They have become a fun tradition on Wikipedia. Userboxes help other Wikipedians to know a brief summary about you; you can tell other Wikipedians that you come from Switzerland, that you like classical music, etc.
There are hundreds of premade userboxes to choose from.
And it is easy to design new userboxes. They require just three things to make them: the userbox template, the name of an icon image page, and a blurb that you type in. To see the code for the userbox included here click "Edit" on the toolbar above.
To add this auto-updating template to your user page, use {{totd}}
This user talk page might be watched by friendly talk page stalkers, which means that someone other than me might reply to your query. Their input is welcome and their help with messages that I cannot reply to quickly is appreciated.
(I have relocated these very precious kindnesses from others to the top of my talkpage, so they will never be lost or forgotten. I am very grateful for each one.)
