User blog comment:DaNASCAT/Technical Update: June 10, 2015/@comment-9380534-20150611151541/@comment-126761-20150611154316

The Special:Top pages haven't been touched in a long, long time - the data sources for them are very out of date. There's a fair chance we will remove them to avoid confusion - we're working on better ways of presenting this kind of data (e.g. Insights).