Every month an Add-on is chosen as the ‘Pick of the month’ – the add-on the Rock Your Firefox Editors think users will love most from the selection added to the Featured add-ons list.

This month’s selection is Textarea Cache, which can save you time (and save your sanity) when you’re on the web.

Textarea Cache is a very simple, but powerful tool. Each time you enter text into a text box – like a Facebook status update, a forum comment, or when you’re sending email via a webmail client – Textarea Cache can save a handy backup of the text you entered for future use.

So when you’re sending the same reply for the umpteenth time on a message board, or you need to remember a comment you made online, you can call up the text you typed with a couple of clicks. Simply click the TextArea Cache icon at the bottom of Firefox, and you can dial up every piece of text you’ve entered, sorted by the date, time and website you entered it on.

The Cache Window allows you to scroll through all your saved text entries, and copy text to your clipboard for further use. From here, you can also delete individual entries, or clear your entire cache if required.

Textarea Cache’s settings are very clearly laid out – you can tell Textarea Cache how long to keep the data in the cache, or remove old data within a certain period after you restart Firefox. If you prefer not to save text entries when visiting certain websites, you can define a list of pages for Textarea Cache to ignore, so that there is no risk of a third party having access to your secure or personal information.

Textarea Cache is available for download now. Check out more great add-ons in the Featured Add-on list here.