I have:
id (int 10, auto increment)
userid (int 10)
username (varchar 50)
date (int 10)
postid (int 10)
And some sample data:
INSERT INTO `vB_post_thanks` (`id`, `userid`, `username`, `date`, `postid`) VALUES
(20, 3674, 'Gladman', 1170026161, 12448),
(21, 3499, 'stitches', 1170092935, 12447);