Few would argue that the impressive arrival of ETFs over the last several years has permanently changed the investment landscape. The attractive expense profile of these securities often gets the most attention; the relatively low expense ratios offered have caused investors to rethink the merits of traditional mutual funds, as investors have embraced passive indexing [...] Original Post Related Stories: ALPS Planning MLP ETF Credit Suisse Set To Launch Cushing 30 MLP Index ETN (MLPN) UBS Launches Alerian MLP Infrastructure Index (MLPI)