I've lurked at /. without posting for ages, mostly because I just don't have the time to interact like I used to.
But I've been clicking through the old RSS feed more and more lately, and when I saw the PAX Plague thread today, I came over to comment, since I'm kind of affected by the whole damn thing. I thought I'd take a look around since I haven't been here in awhile, and I saw that there are freaking ACHIEVEMENTS associated with our accounts. It's silly, and I'm sure it's been here forever, but I thought it was awesome and I was delighted when I read it.
I didn't realize how much I missed Slashdot until I spent some time here today, and I bet that anyone who joined in the last 2 years doesn't even give a shit about my stupid comments or anything, but it felt good to come back here, and feel safely among my people again.