We have made this change as the competition was getting extremely fierce for a place in the hiscores in certain stats. You now have a greater chance of being able to see how you rank against your friends and enemies in your favourite skill!
Please note that you still need at least level 30 in a skill to appear in the relevant table. Also players who have not yet played since the change will not appear in the table until they login, so it will take a few days to fill up.