Here's a great resource for a ton of free SaaS "Software As A Service" (cloud-based apps). Click here to view.
Constant Contact is getting ready to launch a new social media marketing tool within its suite of current offerings (email marketing, online surveys and event marketing). As a "Constant Contact All Star", ExtendedOffice is an early adopter and gets to check it out before "the world". They have launched a great social media educational blog that is really quite excellent. Check it out and get all of your social media questions answered in one place!