I've just been browsing porn on some of the sites recommended in this thread :

http://www.escort-ireland.com/boards/showthread.php?t=71894

Two things came to mind.

1. Who would pay for porn when there are free sites like that out there ?

2. Do women always curl their feet up when they are being fucked ? I've viewed a few vids this evening and sure enough, all the women hold their feet curled back while they're being pounded.