It is nothing but a nice number, easy to remember. Now a days it is a fashion to the media to make sensation to such non-useful, meaningless things.
The business community make it a chance to boost their business. " Buy Gold in 12/12/12, it will bring fortune to your house" this is an advertisement given by a popular jeweler.
Big cloth shops, Gift shops, Car dealers are also try such advertisement to attract customers.
Not only 12/12/12 but also 11/11/11/, 10/10/10 and any such numbers are popularized by the media and the business magnets.
It is very pity to hear that hospitals encouraged pregnant women to get deliver on 12/12/12. For this hospital authorities given medicine to delay the delivery and done cesarean on 12/12/12, and for making more happy to the couple they announce the birth of the baby is exact on 12 hrs-12 mts- 12 sec--on 12/12/12.
Not only in numerical aspect, but media give popularity to day like 'Akshaya Threthiya' etc.
One month earlier media announce this year Akshaya threthiya is important due to.......likely . And followed this business people givr their ads according to their product choice.
Most wonder thing is that not only rich, but the poor people also run towards this ads.
These are all, may be the fashion of this century. Believe so.