RoundaRound (who makes Maxistack and such) made a mod that let sponges work which is not yet updated.
Some server mods for multiplayer allow you to control the radius of the sponge which absorbs all liquids... and they all you to apply redstone power to the sponge to prevent it from working, ie, you could make very easy lava or water traps for mobs.
Some server mods for multiplayer allow you to control the radius of the sponge which absorbs all liquids... and they all you to apply redstone power to the sponge to prevent it from working, ie, you could make very easy lava or water traps for mobs.