...rules of thirds

as you notice all my pictures are almost smack dead centre..so far what i look for is more of overall composition to my likings...or to my style rather than sticking to the rules of third...my early understanding of the rule is on horizontal part only until lately when some more readings and after i got my canon ip4200 where the print set-up will ask u the option...then i realised of the meaning of the rule nine grids...cheers