Meaning of A-LIST in English
A mythical group of weblogs and personal sites (and their creators) who are simply Much Cooler Than You. It is worth noting that (a) no such list actually exists, (b) those who are on the list adamantly deny its existence, and (c) it is not the same as the Cabal. A-list is frequently used in a mocking manner by those who are not members. Example: Oh, one link from kottke.org and now you go all A-list on us! OR You haven't seen this yet? All the A-listers linked to it.
Slang English vocab. Английский сленговый словарь. 2012