Quick post tonight before I wander off to bed -- I knew there was a resource I'd forgotten to post, and now I remember.
The Birthday Socks are a pretty complicated pattern, and while I was working it, I found what was labeled as an RKI stitch. I had no clue what this was. It seemed to be some sort of increase, but I couldn't figure it out.
While the pattern included directions, the written directions for this particular stitch just didn't quite make sense for my head.
So, Google and a bit of sluthing gave me this resource, including a page all about lifted increases. And the photos just made a lot more sense then the description in the pattern did. That's no slight on the pattern, that's just how my head works. I have some issues regarding spatial and kinesthetic sense, so it's always hard for me to figure out exactly where the needle/hook goes, and it make take several different descriptions and tutorials before one sticks.
(And now I actually really like the lifted increases. They're almost invisible. If a pattern doesn't specify, I'll either use these or an M1 increase, depending on what, specifically, I want.)
Anyway, hope that's helpful, and alleviates some confusion.