As a graphic designer, I see several job ads saying, "some familiarity with X is a plus."
I had used HTML, CSS, JavaScript, Dreamweaver, Adobe Premiere, Adobe Flash, etc. a while ago. I could probably pick some of those skills back up again pretty easily. Others, probably not very easily.
Some I was never fully knowledgeable in, but had a basic familiarity with. I am OK with including these technologies on my resume for those types of jobs, but should I include those projects in my portfolio?
Would doing so make them think I could just pick it up very easily and they would expect me to use those skills without struggle on day one?
Conversely, does leaving it out of my portfolio make it seem like I could be lying on my resume about having some knowledge of those skills?