I don't think anyone really goes for believability when it comes to April 1st, I mean I went to worldofwarcraft.com, starcraft2.com and diablo3.com specifically to see what their April fools jokes would be.
I think it's pretty original and nice find DDR I didn't see that.
They are both 1st April jokes the dance battle system was quite lame actually but Pimp my Mount!? that would be soo cool! imagine you got a mount, and you add exhaust tips to it, making it go 5% faster! and neon xD
Finally finding about some of the bots that are flooding the users online - bytespider apparently is a huge offender here - ignores robots.txt and comes in from a ton of different IPs
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.