At present if somebody posts a patch for review in Phab, he fills in the Reviewers fields with some possible review candidates so that the people are notified. Usually me, Martin and Tim appear in that field.
I wonder if there is a better approach. Anyone interested in doing code reviews could set up a Herald rule to watch review requests in the particular repository. This is my "Differential Revisions" herald rule:
> When all of these conditions are met:
> Repository is any of rLTRN (libtaskotron)
> Take these actions every time this rule matches:
> Send an email to kparal
With this rule, you get notified once when the review is created, but not on its updates (unless you choose to get CC'd or you're specified in the Reviewers field).
If all of us (I, Martin, Tim, Josef, Petr and anyone else interested) set it up this way, we will be notified of incoming review requests, and people don't need to put a large number of names blindly into the Reviewers field. Of course they still can some provide some names manually, to create some pressure on the most likely reviewers :-) With this approach it's also easy to see which reviews are "taken" and which are still free to take (empty reviewers list).
So, if you're just slightly interested in doing some code reviews, I think that creating such Herald rule is a good way to follow what's going on. At the moment it can be created just for libtaskotron, because that's the only repository we mirror (and the rule seems to be based on repositories, not projects). But we can easily start mirroring repositories of other projects as well, I believe.