More than anything, I really think it comes down to whether or not its typically acceptable to tag owners of multiple accounts with negative trust, just because they own multiple accounts. Second comes whether or not trading/selling merit is generally acceptable, and to what extents.
The general consensus between the remaining active DT members that do attempt to *improve* the forum (not the DT members that are active and don't really do anything in that regard) is yes.
Any hidden alt is shady in my book and warrants some type of feedback for awareness, negative or neutral may depend on the situation. My issue has been how much proof is required to reasonably match someone as an alt. I try to conform myself to a community standard that I thought was in play but others seem to cross that line unchallenged, so I'm not sure why I'm holding back. I do not want to dampen any progress that may be getting made but I see a lot of these unusual merit links as hunches because they aren't really based on any hard proof, unless there are other links between the accounts that can be found in addition to the unusual merit activity.
I've been led to believe that it is
not safe to conclude someone is an alt based solely on potential shared wallets... which I would think is a more decent link than sending merits to another account, but again, my impression is that this isn't enough to reasonably link accounts. That being said, it is hard for me to ever conclude that it would be ok to accept someone as an alt because they sent X amount of merits to someone... even though my gut feeling says otherwise in some of the cases.