Depending on your hosting, you may periodically need to save disk space.
I was in that position recently, because I exceeded the amount of space I was allowed in my MySQL databases.
There’s an easy way to reclaim some unused disk space. As MySQL databases grow, they accumulate some unused space in the same way that a hard disk does, and occasionally a “defragmentation” process may be required.
One way to do this is to install wp-dbmanager. You will get a new menu, called database. One of the options on that menu is optimize-db. You want to use that, and optimize all of the tables. That will free up some space for you. As a bonus, it should also make that database run more quickly.
In my case, I freed up about 150Mb in one go.
The plugin allows more than just database optimization; it has options for backup, repair, etc. It recommends that an optimization process is carried out at least once per month.
