Most of the forum users knew something was coming from theymos. Last year The Sceptical Chymist was The Pharmacist, and I remember he wrote the first reply when theymos came up with the IQ score thing. Back then, I wouldn't say I liked how The Sceptical Chymist asked in which timezone theymos lived in because I didn't get the term he used. Last year, almost 75% of forum users were fooled because of the IQ score prank.
But if you compare it to this year. I won't say it was successful enough. People started creating threads on 30th March (Like seriously?) about the April fool. So, most forum members already know something is coming up. If you didn't get fooled, It's okay; let others. But, People are creating more and more topic and letting everyone knows, "Guys, it's April Fool, Guys, It's April Fools." WTF man? What is the point? Catching some merits? I would say we ruined it.