Correct me if I'm wrong but I have the feeling that since the trust system is decentralized, having a red tag is not so important, is that so? Apart from the issue of custom trust lists, which icopress mentions. For example, it appears to me that yahoo62278 has one red tag, but he has 36 in green, and it is not the only case that appears to me of highly trusted member with 1 or 2 red tags. I guess it is not that important.
yahoo appears to you as having one red tag and 36 green based on your custom Trust list. Meaning the ones you trust and the ones they trust and the ones these ones trust. And you trust them all. Thus, if any of them, without being member of DT1 / DT 2 gives a tag (no matter its kind) to a user, you'll see that user with the respective tag -- but this is
not the real Trust score. To see the real Trust score you have to look at the respective user by typing a ";dt" after the URL of his profile. Let's take yahoo for example: based on your custom Trust list you see him with one red and 36 green. Based on
my Trust list, I see him with 29 greens and 2 neutrals. but if you access the URL of his profile -
https://bitcointalksearch.org/user/yahoo62278-355846 - and the if you add a ";dt" at the end of the URL (like this:
https://bitcointalksearch.org/user/yahoo62278-355846;dt) -
only now you can see his real Trust score, meaning the Trust score as seen by DT members, which is 23 greens and 2 neutrals.
Besides, having a red tag actually
is important (meaning to have a red tag from a DT member, which influences the real Trust score, not a random red tag given by a non-DT member, which is seen only because of your own custom Trust list), as many campaign managers look at the respective profile adding the ";dt", to see the real Trust score.
Now, of course, as yahoo wrote above, even DT members write red (or even green) feedbacks without a proper justification (without a real reason, without reference link etc.); also, the respective red tag can represent a real bad thing (such as theft for example) or not (but let's say that most of DT feedbacks are correct though). In this case it's up to the campaign manager to accept you or not.
I, for example, if I'd run a campaign and if - let's say - the old troll TimeLord would be in DT and he'd leave a red tag to an applicant, then I'd analyze very carefully what that troll said about the respective applicant, as I don't trust him (TimeLord) at all, knowing his habits to leave retaliatory feedbacks or ones without anything in common with reality. And, as he usually leaves imbecile and retaliatory feedbacks, I'd most likely ignore his and allow the respective user to participate.
Another example is the idiot WhiteManWhite, ex-DT member, which gave icopress a stupid red tag then he left the forum. Meanwhile he was excluded from DT, but at that point his feedback influenced icopress' Trust score, as it was given by a DT member.
What I'm saying it depends from case to case but generally speaking, I think the campaign managers look at applicants' profiles in "DT view", not based (just) on their custom Trust lists. And, if you want to see someone's real Trust score, make sure you add the respective ";dt" at the end of the profile's URL.