How does the orkut fortune teller work?

There is this feature called "Today's fortune" which google's orkut has been faithfully displaying all these years. I know at least a couple of orkut fans who religiously believe in the validity of this oracle. But most of the people do not even bother to take a look at it and even if they do, they consider it as yet another fun gadget that google provides.

But at times I have felt that google's prediction reflects to some extent how my day went. How in fact does this orkut prophet work? Do they use some complex astrological algorithm which uses date of birth provided by the user in his/her account to generate the one line prophecy? A little bit of googling, made me aware of the fact that there are astrology softwares like SolarFire, AstrolDeluxe and Astrolog (which is an OSS) that perform numerical and planetary computations to generate horoscopes and natal charts.

Or is it a mere eye wash? Do they just have a huge inventory of sooth-sayings which they randomly pick daily for each profile? I have never seen their prophecy repeat too frequently. Is it because the list is too huge that the probability of a close repeat is infinitesimal? But isn't astronomy a probabilistic science? Is it really a science? Studies have repeatedly failed to demonstrate statistically significant relationships between astrological predictions and operationally-defined outcomes. But to the dismay and enragement of many rationalists in the country, Indian courts have supported Jyotir Vigyan (Vedic Astrology) as a university science subject. If so, can a suitable random number generator fine tuned to reduce the number of false positives and false negatives, and seeded by a value that is a function of the date and time of birth, and the current time and day qualify to be a good fortune picker?

Without digressing further, let us look at some of the sooth-saying that orkut had in store for me over the past few days:

Toil to make yourself remarkable by some talent or other.
If you're never scared or embarrassed or hurt, it means you never take any chances.
Start reading a book today.
If you want to be loved, be lovable.
Do something good for someone today.
A friend asks only for your time not money.
Don't let friends impose on you. Work calmly and silently.
Hope is necessary in every condition.
Simplicity is the ultimate sophistication.

And I got a few funny ones like these too.

The guy who reads your fortune was fired. Until we hire a new guy, go visit a friend’s album.
The guy who reads your fortune is on vacation. We don’t know what to say… Go visit someone’s profile.
The guy who reads your fortune is sleeping. Don’t wake him up.

Er, why should I rack my brain over how google provides these "divinations"?
Isn't it high time that google rename this app to "Thought for the day"?