Not even almost. To find out your available RAM, add your free and inactive memory together. Page outs are cumulative since your last restart. They don't indicate real-time paging. It simply means that you paged out at some point since your last restart, but only a very small amount. It doesn't mean you're paging now.
Read the link I provided for an explanation of the terms. Inactive RAM is still available to apps, if needed.
It could have been while opening apps or large files, which may have maxed out RAM for only a few seconds. Your readings indicate you have plenty of RAM not being used.
Your computer is not running out of RAM in either of the last two screenshots. You're getting hung up about the "free" amount, which isn't important. Free RAM is POINTLESS RAM since it's not being used. OSX tries to use all of the memory available for caching itself and your applications (Windows 7 does the same thing).
No, you don't need more RAM. Your page outs are negligible and may only represent a few seconds of paging at a momentary peak in memory demands. There's no need to add more RAM unless you're constantly paging out a significant amount under normal use. Don't get fixated on the fact that you had a tiny amount of paging activity at one point in time. Relax and enjoy your Mac.
You can't add too much RAM. That poster doesn't know what they're talking about. It's also their first and only post in the forum. If you install more RAM than your Mac can use, it will simply ignore the excess RAM and not use it.
That is false. For example, some earlier Mac models could only use a max of 3.3GB of RAM. You could install 4GB and they would only use 3.3GB, ignoring the excess RAM. It doesn't cause kernel panics, unless you have defective RAM.
