The "TSX" is Canada s largest Exchange, third largest in North America and the seventh largest in the world (Market Cap). It has some of North America s largest and most successful Company s among it s listing. I would not equate it to an OTC board unless one were to suggest that the NYSE were OTC equivalent.
The exchange is the primary listing for several energy companies including; Cameco Corporation, Canadian Natural Resources Ltd., Canadian Oil Sands Trust, EnCana Corporation, Husky Energy Inc., Imperial Oil Ltd. and Nexen Inc. all within the top 40 companies listed in on the exchange.
Many of the large companies listed on the TSX, especially those on the S&P/TSX 60 index, have a secondary listing on an American exchange such as the New York Stock Exchange.
Off hand I do not intimately know the requirements for a TSX listing but most assuredly it is a well respected World class Stock Exchange.
Any "Niostar" listing, if it should qualify for listing, should be considered by Shareholders a strong signal as to the potential viability of the Project - IMO.