The forum is dead now and has been for many years. But it had its day. The guy who made and sold Indeed was a regular too as well as other pretty successful people, but it had a ... let's call it a certain vibe.
From what I briefly gathered, WickedFire is similar to today's WarriorForum.
Fun fact: Wickedfire was also around for the launch of "2girls1cup" (if you aren't familiar with this, do not google it) [1] and Riff Raff (now a top-100 artist, somehow... wtf) [2]
[0] http://www.wickedfire.com/affiliate-marketing/74544-plentyof...
[1] http://www.wickedfire.com/misc-products-software-services/16...
[2] http://www.wickedfire.com/shooting-the-shit/163812-my-first-...
The thread wasn't full of people mocking him (wf wasn't like that back then) but people were telling him it's generally not a good idea and he should go niche instead. I've completely lost touch with all of my contacts from back then and I can't find the thread unfortunately, so you have to take it on my word, I guess.
A lot of the big players are still active and still making money. If you want an invite to a Skype group shoot me an email.