I've had my account since October 2014 (forgot why I made it), and started using it in August 2015 only for the StrikerWolf1 stuff until I made the PAB thread a month later.
Lurked since the old Yuku days. Lurked more and more and finally joined the Kiwiians at Prime Jace Levels after realizing my need to see attachments and rate posts.
I actually registered an account soon after discovering the Farms because I wanted to be able to rate posts. I was only planning on lurking but then @Dynastia noticed me spam-rating his posts (as I was going through the infamous Golden Knight thread) and struck up a conversation; he ended up convincing me to start posting, which I did about a week after I registered. I've never looked back
I lurked on the CWCki for months before finally joining the CWCki Forums. I'm too lazy to even look up when I joined, but it was shortly before Deagle Nation.
It's tough to put a number on the length of time between starting to lurk and forming an account. I've known about the CWCki Forums for years but just posted on /cwc/ from about late 2009 until 789chan closed. I lurked the forums for a while from 2012-ish on but fell for the idea that CF couldn't begin to touch /cwc/'s deep discussion of lolcows. That community started going to shit around the time of the transition from /cwc/ to /cow/ and I started reading the CWCki Forums exclusively when /cow/ moved to 8ch.net. I finally broke down and made an account after the GameStop incident.
I lurked on and off here for about a year before finally making an account. I hadn't planned on really posting much or anything, just more actively lurking. But i kinda failed at that last part.
I've lurked on and off since the start of the liquid saga, if I remember correctly. I knew about Chris before that though... My procrastination "skills" know no bounds, it seems, hahaha!
About six minutes. Because I needed a place which would educate me on the intricacies of people like "Stefonknee". I live in a very small box and it is nice, but sometimes the mice nibble on our toes.
Thank you for your time, I appreciate this opportunity to learn more about the diversity of our theoretical society.