All you need to know about increases and more

I found this really amazing article on Interweave about increases that I highly recommend. Not only are the instructions and explanations very clear, but the illustrations are brilliant. The article is so complete, it almost gives too much information. But it's the best resource I've found to clarify certain common confusions: both to distinguish different techniques that are often considered the same, or the other way around, the same stitch done differently and often mistaken for different techniques. But the reason I most like this article is that it gives clear explanations about which stitches are more or less attractive, more or less visible, and more or less easy to execute. Exactly what you need to make a decision on which one to use, depending on your purpose.