I also enjoy the PoP blog. :)
That's one I actually haven't read, but I do enjoy a lot of their comments on this forum, so I may have to check it out next.
The 1500Days one actually led me to one called FI Fighter, which I'm now in the middle of.
I always like to go back to the beginning of a blog and read every post if it's amazing (like MMM, Lacking Ambition, JLCollins, MadFIentist) and if it's pretty good then I'll at least go through the archives from the beginning and add all the articles to my read it later list with interesting sounding headlines (thus why I read about 75 of 1500Days when they have a few hundred - I skipped a lot of the interviews with bloggers I had never heard of, as well as a bunch of "rants" about stuff - too negative for me).
Anyways, I added about 175(!) articles of FI Fighter to my list yesterday, so that'll take me a day or two to get through, then maybe I'll check out PoP. Thanks for the recommendation!