I've a gripe with the Metropolitan Museum of Art, specifically its website, and more specifically the way it handles membership. I know I've run into similar problems elsewhere; I think one was the Wolf Trap website, possibly the New Yorker as well. And my guess is that it's a result of hidden silos: when they got into the internet, separate departments did separate developments. For the Met, the website is focused on visitors, describing exhibitions, how to visit, etc. and how to become a member. What's missing is any focus on existing members--to find your member account info you have to go to the shopping option.
It makes sense that the accountants would worry about renewals, etc. while the museum people just worry about getting people in the door.
But, if I were emperor, my edict would be that any website for an organization would have a "Log in/Your Account" icon in the upper right corner,