REGISTRATION RIGHTS AGREEMENT
This Registration Rights Agreement (this "Agreement") is made and entered into as of July 21, 2004, by and
among Hudson Health Sciences, Inc., a Delaware corporation (the "Company"), and the purchasers signatory
hereto (each such purchaser, a "Purchaser" and collectively, the "Purchasers").
This Agreement is made pursuant to and in connection with (i) the Subscription Agreements between the
Company and each Purchaser dated as of the date hereof (collectively, the "Purchase Agreements"), (ii) the
Private Placement Memorandum dated June 17, 2004 relating to the offering of securities of the Company
pursuant to which the Purchasers purchased the Registrable Securities (the "Memorandum") and (iii) the
proposed merger (the "Merger") of EMLR Acquisition Corp., a Delaware corporation and a wholly-owned
subsidiary of Email Real Estate.com, Inc. ("EMLR Mergerco"), with and into the Company.
The Company and the Purchasers hereby agree as follows:
1. Definitions. Capitalized terms used and not otherwise defined herein that are defined in the Purchase
Agreement shall have the meanings given such terms in the Purchase Agreement. As used in this Agreement, the
following terms shall have the following meanings:
"Advice" shall have the meaning set forth in Section 6(d).
"Business Day" means any day except Saturday, Sunday and any day which shall be a federal legal holiday or a
day on which banking institutions in the State of New York are authorized or required by law or other
governmental action to close.
"Commission" shall mean the Securities and Exchange Commission.
"Effectiveness Date" means, with respect to the Registration Statement required to be filed hereunder, the earlier
of (a) the 150th calendar day following the date of the Purchase Agreement, or 180 days following the date of
the Purchase Agreement if the Registration Statement is subject to review and comment from the Commission,
provided that if such day is not a Business Day, then the nex