In one aspect, the present invention provides a method for treating colon andor ovarian cancer in a subject comprising administering to a subject in need thereof a compound of general formula : wherein R1-R6, R, -R, Q, Y1, Y2 and n are as defined herein, wherein the compound is present in an amount effective to inhibit colon andor ovarian tumor metastasis. The systems and methods includes identifying network transaction parameters corresponding to an application and utilizing the network transaction parameters to execute a network transaction in advance of an expected schedule or after a delay to optimize the network transaction traffic. The system also includes at least one optical detection device capable of successively detecting, at distinct detection areas of said porous material layer distributed along said fluidic path, a change in the spectral properties of at least one of said probe molecules. The second protocol is configured to communicate a second encapsulated portion of the message. According to the invention, a respective image or symbol is displayed at least once for a brief period of time, of which the duration is below the threshold of conscious recognition and above the threshold of subconscious recognition of the operator.