Bukkit

v.1.0.0:

• When you run over sponge you get pelted in that direction.
• If you put a sponge under a sponge then you get launched in the air.
• Permission Node: rSponge.use added.

v.1.1.0:

• Fixed a bug where two sponges on top of each other would not make a difference.
• /rsponge use is added to toggle whether you want the sponge feature enabled.
• /rsponge use now has a permission: rSponge.UseToggle
• Now works with 1.5.2

v.1.2.0:

• Now damage is not taken when you fall from the jump.
• /rsponge sound is added to toggle whether you want the sound feature enabled.
• Now works with 1.7.2

v.1.3.0:

• Finally Added Config:

1. Two Sponge Height:
2. One Sponge Height:
3. Straight Distance:
4. Diagonal Distance

• Includes ratio from Straight to Diagonal (1:0.65)

v.1.4.0:

• Updated to 1.7.2 R0.3
• Now you can completely enable and disable sound in the config.
• Now you are able to the change the sound played in the config from these sounds: http://jd.bukkit.org/rb/apidocs/org/bukkit/Sound.html
• Fixed out of date console enable and disable plugin. Thanks to Orangetavi

Caveats:

• When server reloads plugin breaks.