Alternative implementation of anti-link-valley accumulation:
the smaller the number of outgoing links a blog maintains, the lesser
the part of its surplus score it shares with the linked blogs. A blog with
only one outgoing link thus can't transfer more than the half of its
surplus score over its only link, while a blog linking 100 blogs will
distribute about 99% of its surplus score amongst those lucky 100 blogs.

On the other hand, a blog with only one incoming link doesn't care about
this fact, and receives whatever its part of the only linking blog's
surplus score is.

Like this, two exclusively interlinking blogs A -> B -> C -> B -> etc.
loose a good part of what they've accumulated so far on execution of the
transfers B -> C and possibly C -> B, given the respectively providing
nodes link no other blogs apart from the respectively receiving ones.
Blog C, however, even though no blog but B links it, will receive its
share incoming from B (which is cut in half) without further drawbacks.

This - hopefully - assures that blogs at the receiving end of only few
links (from possibly high-scored linkers) end up with unreasonable high
scores. Nodes connected in a closed cycle suffer 50% spillage, a node
with only 2 outgoing links 33% spillage, and so on.
That way, the undesired score advantage that blogs within cycles transfer to
themselves should be mitigated.