לעברית לחצו כאן
Harav Hagaon R' Shlomo Zalman Ullman Zt"l from the Beis Din of Harav Wossner Zt"l, ordered the blocking of the Otzar Hachochma Forum. This instruction was also backed by Rabbi Yehuda Silman shlita and Rabbi Sariel Rosenberg shlita.
Netfree executes the Rabbonim's instructions, without delving into the reasons behind them.
For more information see here.