Any of the touchscreen devices (e.g. tablets, phones) suck for many of the web sites. I would hate to have to rely on just one of them for web browsing. Even the most basic laptop works better than the best tablet.
At the "Originally Post by ____" line, there should be a symbol like this:
Clicking on it will get you to the previous post. In the case in question, you would need to do it a couple of times to get back to the original post where the author was talking about setting up a timer to keep his tumbler from running too long. I suspect it is the same type of timer that you see for the indoor jacuzzi tubs.