为什么Google不对Discourse进行索引？SEO问题

[mstm]

这种谷歌行为始于几个月前，而且还在不断恶化。

Sudden drop in traffic

The decline continues in my two discourse sites, all previously indexed pages are becoming “Crawled - currently not indexed” and disappearing from Google search. [google] I can understand on one site but is it possible that it happens with in two completely different forums?

就我而言，站点地图并没有帮助……