The LRT™ Trust metrics and the SEOmoz authority metrics specify the probability of a page or of a domain with ranking authority in Google.
||Indicates the implicit trust of the page in the Google search results – works similar to the system of the Trust Rank Patent.
||Indicates the implicit trust of the domain.
||Indicates the implicit trust of the top-level domain.
||Moz Page Authority.
||Moz Domain Authority.
The more trusted a page/ domain/ top-level domain is, the better. In any case, try to get links from highly trusted sites, because the Trust will be inherited.