Can I also discuss about how it's just a copy of GPX+ :D
They look almost same but GPX is about one year older and in my opinion has much more to offer.
(Here's links for both sites, so you can actually see how they are almost same.)
Pokéfarm: link removed
GPX+: link removed
I haven't tested Pokéfarm so I don't have much more to say but from the look and where they have started I'd say GPX+ is better. (Don't hate me if you're PokéFarm fan XD)
I'd like to know when PokéFarm actually started as GPX started in February 2009. I just know there's about a year between their releases.
Also one thing, it's funny to see that in Pokéfarm, Most Lv.100 Pokémon, 1# Mivichi (48 level 100)
Then GPX+: Mivichi (121 level 100) #244 (I think it's same Mivichi) when the best one is ThunderMoss with 1200 level 100 Pokémon.
Well, that's everything I wanted to say. This actually didn't fit here so good but I hope it doesn't matter :D