LPA is inhabited by a lot more people who have moved on from LP or aren't as big of fans anymore. I feel like the more concentrated hardcore fan population is here. Many over there are more interested in talking about other artists on the site, including myself. But their knowledge and viewpoints are really interesting concerning music. Talking with people on LPA has definitely widened my musical horizons and heightened my musical ability.
Mostly, people who don't try to get along with the members there who have the different viewpoints hate the place. But, having joined there in November, the same time as here approximately, I feel a lot more accepted by the community at LPA. And I'm fucking weird.
The biggest pro of LPA for me has been that the people teach me so much about LP's music. For example, I was made aware of swing beats in Wastelands. If you're interested in that kinda stuff, there are some people on LPA you'd wanna meet.