Still trying to figure out what Twitter does for businesses? Looking for case studies? It's all here.

Looking to do more business on Facebook? Check out this list of 30+ business-related applications that will streamline your marketing plan.

Leaving on a jet plane? Detail your situation and get the best prices as movers compete for your business online.

When it comes to interactive marketing, everyone's favorite question is: "What's next?"

Create and update your free business listing and learn where your customers come from and how they find you with Google’s new Local Business Center.

Find and follow top business leaders on Twitter.

Travel to the top of the stack. Next time you’re applying for a job, create a digital business card and include a link to it in your resume.

This service encourages businesses to reward customers who contribute to a daily challenge that has a positive impact on the community. For example, one business offers a $20 handbag discount to folks who commit to a bike ride.

Have Gmail? Keep track of those folks you're waiting to receive a response from.

Create a private wiki for your business -- a great resource for keeping FAQs and company information up-to-date.

Love an idea? Help fund it by donating time to watch sponsored ads.

Check into your hotel, document the types of business professionals you're interested in connecting with and setup face-to-face meetings with like-minded guests.

If you use instant messaging as a way of communicating in your organization, you may want to consider this app which provides the first visual chat collaboration platform built around a group -- instead of the typical linear one-on-one chat format.

LinkedIn has recently changed their privacy policy to allow people, products or services that you have recommended on the site to use your name and photo unless you opt out. If you'd rather remain private, find out how to change your settings. (Note: LinkedIn is said to be considering changes based on user backlash.)