How would you like to own a portfolio of top internet companies for free? Sounds too good to be true right? Actually, thanks to inefficient markets and technical factors, this is exactly possible by owning South Africa's Naspers (NPSNY) which is grossly undervalued. The opportunity in Naspers is the expected convergence of the under-priced market value with the fair "net asset value" - NAV - based on a clearer "sum-of-the-parts" valuation picture brought about through a spin-off of its internet assets into a new European listed holding company called Prosus (PROSY). The listing