RimuHosting has setup a special referral link http://rimuhosting.com/?r=haiti to raise funds for Haiti earthquake relief.
For every server ordered after using that URL before the end of February RimuHosting will donate 20 NZD to Haiti earthquake relief.
Since aid is needed in Haiti _right now_ RimuHosting has made an advance $500 contribution to the NZ red cross Haiti appeal.
So if you are happen to need a server use the http://rimuhosting.com/?r=haiti . And if you're OK for new servers, then please just consider donating directly to an organization you think can help (e.g. http://www.redcross.org/)
Update: Even more hosting companies are working to help. Great to see. http://www.hostingforhaiti.com