Exhibit 99.1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1)(iii) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13G (including amendments thereto) with respect to the Common Stock of The Management Network Group, Inc.  This Joint Filing Agreement shall be filed as an Exhibit to such Statement.

Dated:  February 7, 2013	POTOMAC CAPITAL PARTNERS L.P.
	By:	Potomac Capital Management, L.L.C.
		General Partner
	By:	/s/ Paul J. Solit
	Name:	Paul J. Solit
	Title:	Managing Member

POTOMAC CAPITAL MANAGEMENT, L.L.C.
By:	/s/ Paul J. Solit
Name:	Paul J. Solit
Title:	Managing Member

/s/ Paul J. Solit

PAUL J. SOLIT