Untrusted feedback
These ratings are from people who are not in your trust network. They may be totally inaccurate.
If you received a feedback from theymos, it will be a "trusted" feedback, because he is a reputable member here. But, you are just randoms, so your trust ratings are not worth anything (ok, not worth a lot), so it is an "untrusted" feedback. It does not mean that you gave him a negative rep (which who be displayed in red).
Do you understand?
Ah, ok. It's clear now. Thank you
How can anybody become a reputable member at this forum?