Yes - the cloud is excellent for small business.
And to integrate multiple cloud service (like replicate data between cloud services), please check out http://cloudHQ.net/dropbox
Evernote is an excellent tool for Real Estate business.
However, as a realtor, you are probably using also Dropbox, Google Drive or even Basecamp.
So we built http://cloudHQ.net/evernote: a system which enabled you to sync all your data between Evernote, Dropbox, Google Drive and Basecamp.
For example, with cloudHQ you can just backup all your Evernote notes to Dropbox. Or you can use Dropbox folder as 'drop box' to upload documents into Evernote.
And here is our blog post how to use cloudHQ in real estate business: http://blog.cloudhq.net/post/25010715816/cloudhq-for-realtors