slinky - 5:43 pm on Jun 10, 2013 (gmt 0)
Like PJman, my site was one of the earliest online in my professional niche - the 90s. Issues began with Panda 2.2 and that which Matt Cutts said should work (and every other SEO) didn't. Only one thing did which I am experimenting with now again to see if it provides the same results. Part of the reason for our decline is (a) way too much time trying to figure out what Google wants and too little time on producing the great content we have (large forum, large faq), (b) competitors who have exploded as a result of a and our being in the dark, and (c) some sites completely gaming the system for an extended period of time that Google may end up doing something about but still hurts us noticeably in the meanwhile.
Traffic has had only two or three periods of growth, the largest being my experiment. Time to try again.