The so-called "rank sink" and "rank leak" problems exist in the basic PageRank algorithm.
PR(A) = PR(T1)/C(T1) + ... + PR(Tn)/C(Tn)However, they has been resolved in the final version PageRank algorithm.
PR(A) = (1-d) + d (PR(T1)/C(T1) + ... + PR(Tn)/C(Tn))