WB, Shopping613.
Rav Yaakov Shapiro shlita was and is Chareidi. I think he didn’t post his name because even though he was (I think) the main mod, he wasn’t the only mod who posted and answered shailos and haskafa questions. He also had haskamas from other rabbonim but I don’t remember who they were.
Regarding why the bloggers bashed him, well, that’s what bloggers do. They were basically a set of Chareidi haters who hated anything Chareidi and anything that strictly followed the Torah without regard to modern 21st century Western norms.
The truth is he didn’t have enough time to be responsive full-time to the large number of posts to the site, which is which there was often delays in posting and responding, and sometimes not everything would get addressed so other volunteers would try to kick in when they could. The site started in the late ’90s and was still going strong for over ten years. Eventually it got replaced by the newer site, which was slightly more active when new but doesn’t seem to currently have enough volunteers with time to be very active.
You should know that Rabbi Yitzchok Adlerstein, a Modern Orthodox rabbi, wrote a multi-page cover story in the Orthodox Union’s flagship publication Jewish Action effusively praising Rabbi Shapiro and the work he conducted on the website for, as he described it, literally saving the spiritual and physical lives of dozens and dozens of Jewish teenagers at-risk. Through the site all kinds of troubled teens got in the touch with the rabbi and he would help them and put them in touch with people and communities that could guide them to a proper Jewish life.