"Later this evening we’ll be making a change on united.com that will remove the ability to see the specific allocation of seat inventory made to each Fare Class (this is the Fare Class hyperlink found in the right-most column when searching for flights or viewing itinerary details). I know that this is a popular feature for many of you here – in fact, we liked it too. But, it wasn’t without issues. Specifically, for many customers who are not as familiar with the ins and outs of fare structures, there was often room for this information to be misinterpreted. It also left the door open for undesired exposure that allowed automated scripts to scrape and re-display information in ways for which it was not intended."
Translation..."we are now so short term bottom line driven that we want to make sure our best customers pay as much as possible for our tickets."