I'm not aware of any Sabayon-based servers, but there is plenty of Gentoo based ones (you'll also help Sabayon that way, because it's based on Gentoo).
, right side, are some ads from hostings that use Gentoo
Sabayon Linux Fully updated
CPU: AMD FX 4100 @4515MHz
RAM: 8GB Corsair Vengeance LP DDR3-1600
Video: Ati Radeon HD7770 - 1095MHz core 1GB GDDR5 @1250MHz
Lenovo ideapad S205 - 11.6" HD screen - AMD E450 APU - Ati HD 6320 - 4GB DDR3 RAM