^ I have just been to Idollica for the first time. Wow, I have such mixed feelings. It is an amazing resource, put together by someone who really knows their subject, and as far as I know there is nothing like it anywhere online (in English). Since the site author considers that period to be the 'silver age', it would be great if s/he or someone would also put together the beginnings of a site on the 'golden age' as well. Maybe someone who knows how should start a wiki for 'former j-pop idols'... although in fact, there is no reason that people who have the knowledge couldn't add a lot of material to the Generasia wiki. So, positively, yes, Idollica is an amazing site!
On the other had, I am saddened by the way the author is so critical of contemporary j-idols and j-music. S/he ( I kind of feel that it's a 'he' though) bags everybody, from Momusu to Ayumi Hamasaki and Utada, so it's not just that he doesn't like idol groups. I just feel sad that s/he, while recognizing the cultural iconicity of groups like Onyanko Club, can't at least slightly recognize that musical culture is a living, evolving organism that moves in response to the wider popular culture of the times, and also helps to form that culture. Even if you don't like the results, it seems a bit narrow to be stuck in a timewarp where only the music of the past is any good. To be honest, I appreciate music from a huge range of times and cultures, but I find that modern contemporary j-pop is some of the most alive and positive stuff in my whole collection. And to be honest, and not wanting to bag anyone here, but just stating what "does it" for me, I find the sound of, for example, Watarirouka Hashiritai to be overall a preferable listen to their Onyanko Club precursors Ushirogami Hikaretai. I appreciate the latter for their place in the development of j-music, but I actually really enjoy where the journey has come to today.
Anyway, each to their own of course, but I do prefer to "live and let live", allowing each to enjoy what they like and not feel superior if I prefer something else.
All that said, if you haven't been to Idollica yet, go take a look. I certainly can leave the site again, heh heh, but I also will enjoy all it has to offer.
Edit: Actually just did a brief tour of the Generasia wiki, and amazed to find that actually there is quite a bit of stuff on the 'silver age' there already - Onyanko Club has a ton of coverage, for example, with articles for the main group, the three subgroups and pretty much all albums and singles having their own articles, as well as the majority of individual group members. Wow.