TfGF may have no control over any websites or resources which are provided by companies or persons other than TfGF.18.2 You acknowledge and agree that TfGF is not responsible for the availability of any such external sites or resources, and does not endorse any advertising, products or other materials on or available from such web sites or resources.18.3 You acknowledge and agree that TfGF is not liable for any loss or damage which may be incurred by you as a result of the availability of those external sites or resources, or as a result of any reliance placed by you on the completeness, accuracy or existence of any advertising, products or other materials on, or available from, such websites or resources.19.