Sorry, slightly chaotic lately. If the thread did weird stuff, 'twas probably my fault.
You no longer suffer reduced drops quantity or quality from farming a place repeatedly. Instead, in its place, the drop rates for parties was scaled upwards for larger parties, and significantly downwards for smaller parties.
In the the subsequent update,
discussed here, the reduced overall drop rate remains in place for smaller parties, primarily solo farmers, but a list of special items was set to be excluded from it, as seen there.
The end result is that solo farming is still down from where it used to be, but not nearly to the extent of the April 19th update, and many highly tradeable items still drop indiscriminately regardless of how many party members you have.
For more information, I'd highly suggest reading through that thread in order to make your judgment.