What's MRU list?

MRU stands for Most Recently Used. It is a list of your most recently visited web page, opened documents, etc. For instance, open Microsoft Word, click menu File. At the bottom of the menu you will see that there is a list of previous documents. That is MRU list. A lot of software create and use MRU list. So, actually MRU list is like your "history". It's not spyware, but some spywares use it to spy on you.