Involvement in multi-level marketing includes a number of issurim: Gnayvat da'at - the issur of presenting investment in the "Pyramid (or Ponzi) scheme" as worthwhile when in fact it is not so, like any "Pyramid scheme" in the world ; Lifnei Ivair - Do not put a stumbling block before the blind ; not involved in yeshuvo shel olam and more...

The Right To Privacy In Jewish Law by Itamar Warhaftig EDITORS: Rabbi Yaron Unger Rabbi Ido Rechnitz 5769 (2009)

Responsa in Matters of Law and Business | Usury | Charity || Ofra 5773-2013 ||

Property and Trade in Halachic Law || Rabbi Ido Rechnitz -Editor-in-Chief | Rabbi Daniel Katz - Editor | Rabbi Yaron Unger, LLM -Editor || Ofra, Israel 2010 – 5770

By Rabbi Yehuda Zoldan || Editors Rabbi Yaron Unger, Ll.B | Rabbi Ido Rechnitz || Kislev, 5769

Evidence and the Non-evident: Proof and Pleadings in Halachic Law || Rabbi Yaron Unger: Editor-in-Chief | Rabbi Ido Rechnitz: Editor | Rabbi Michael L. Baris & Rabbi Chaim J. Bloch: Co-editors|| (Ofra, Israel 2004 – 5765)

Jurist, Jurisdiction and Jurisprudence || Rabbi Yaron Unger -Editor | Rabbi Michael L. Baris & Rabbi Chaim J. Bloch: Co-editors || (Ofra, Israel 2002 – 5762)

Etikka Tzvait Yehudit (Jewish Military Ethics) || Ofra: Mishpetei Eretz Institute & Tel Aviv: Yediot Books (2013) || (Winner of Rabbi Shaul Israeli Prize for Torah Literature (2013) and Moldovan Prize for Military Literature (2014)).

Editor: Rav Ido Rechnitz || Consultation: Rav Dr. Itamar Wahrhaftig || (Ofra 2007 )

Responsa in Matters of : Labor Law | Theft | Torts | Copyrighting || Haim Yoel Bloch | Daniel Katz | Ido Rechnitz || (Ofra 5771-2011)