A way I bring back the punch to text is to duplicate the text layer then with Levels bring the levels control points together to greatly increase contrast and restore white, then change that layer blend mode to multiply, now what you have is the text looking as strong as the file can stand. Click image for larger version. 

Name:	Snap_2012.03.13_10h09m50s_002.jpg 
Views:	736 
Size:	43.7 KB 
ID:	88015Click image for larger version. 

Name:	Snap_2012.03.13_10h17m06s_003.jpg 
Views:	789 
Size:	88.6 KB 
ID:	88016Click image for larger version. 

Name:	Snap_2012.03.13_10h17m41s_004.jpg 
Views:	712 
Size:	45.0 KB 
ID:	88017