I don't know, it can be used in the same way, really. The point was that the place that had been where the Join Date was has been replaced with the Post Count.
Join date tells you a bit about a person, someone who joined in late 2010 probably joined to get information Skyrim before release, someone who joined in 2006-07 probably joined for Oblivion or pre-release information about Fallout etc.
And a low post count with an early release date (stereotypically) means well thought out posts vice-versa
and besides, the stars already represent the post count better than the number
And is it just me or are the forum ranks written below the stars/black dots a different color now?
You take them seriously, or not, based on the content of their post. To do anything else is unreasonable. A poster could join in the next ten minutes and post the most insightful thing that you have ever read; but a mentality that uses join date as a gauge to potential quality of content would likely never read that post.
I doubt that anyone does that, it is more a gauge of whether a slightly pointless topic is meant to be humorous or spammy, and besides I don't take anyone seriously who has no avatar
