TO PENSHURST.

Thou art not, PENSHURST, built to envious show
Of touch, or marble ; nor canst boast a row
Of polish’d pillars, or a roof of gold :
Thou hast no lantern whereof tales are told ;
Or stair, or courts ; but stand’st an ancient pile,
And these grudg’d at, art reverenced the while.
Thou joy’st in better marks, of soil, of air,
Of wood, of water ; therein thou art fair.
Thou hast thy walks for health, as well as sport :
Thy mount, to which thy Dryads do resort, 10
Where Pan and Bacchus their high feasts have made,
Beneath the broad beech, and the chestnut shade ;
That taller tree, which of a nut was set,
At his great birth, where all the Muses met.

Efficient learning

The Mnemosyne software resembles a traditional flash-card program to help you memorise question/answer pairs, but with an important twist: it uses a sophisticated algorithm to schedule the best time for a card to come up for review. Difficult cards that you tend to forget quickly will be scheduled more often, while Mnemosyne won’t waste your time on things you remember well.

The software runs on Linux, Windows and Mac OS X.
Memory research

While you use the software, detailed statistics can be kept on your learning process. If you want, these logs can be uploaded in a transparent and anonymous way to a central server for analysis.

This data will be valuable to study the behaviour of our memory over a very long time period. As an additional benefit, the results will be used to improve the scheduling algorithms behind the software even further.

I haven’t tried it yet, but it sounds pretty fascinating. It’s also open source, which is always nice.
You can read more about it, download the program and get the GRE vocabulary flash cards here.