[How To?] Change time format

[socialize]

To hours and days?
Like:
15 minutes agos......
1 hour ago.....
6 hours ago....
12 hours ago.....
20 hours ago....
1 day ago.....
4 days ago....

and so on? I dislike the date format but I rather perfert min,hours, and days

[.m.]

so dates to be completely eliminated and it can be like 12 years 6 months 30 days ago ? that could be a resource hogger