The pull down to refresh thing is becoming a growing trend on mobile apps/sites. In case you don't know what I am talking about, here is an example:
Note: the image doesn't reflect 100% how this feature really is, the "Pull down to refresh" is hidden all the time and only becomes visible when you start scrolling beyond the limits of the page.
This could be very handy to have in the mobile view since we don't have live refresh thing going on (and good thing we don't, it could quickly drain the resources of users without unlimited data transfer plans).
I believe in couple of years, there will be no mobile app/site without this intuitive feature.
They might want to check if that thing is patented first to avoid getting in trouble.