Their brevity
Seriously, though, literally no one but you is gonna care about all those stats. They're just white noise anyway, without context.
I think if you want audience appeal, you should relate your experiences rather than the intricate calculations that led you to report an earn of $45.0356 an hour (after adjusting for a grand total of 5.659 hours of bathroom breaks). After all, this particular forum is about Vegas and what happens/happened there, not a detailed deconstruction of results.
As to what I find enjoyable about them...pictures of nachos. Seriously, keep the food porn coming.
Oh, and if you post a picture of the end of a hand, it would be nice if you provided a line or two of written context ('dumbass called with third pair and got there on the river...").