Interesting Grammar Read on the "than I" vs. "than me" Question

Writer geeks - Came across the "than I' vs. "than me" question today. Subjective or objective case following "than"? 

Specifically, I was dealing with a "than who" vs. "than whom". I felt unsure of the grammar rule. (Following a preposition? The implied subject?) Went looking. Apparently, which case follows "than" is controversial in that world of grammar authorities and the" who" or "whom" after "than" question is particular within the larger question of which case to use. 

Great read on the issue here