LinkedIn Outlook Toolbar 

LinkedIn Outlook Toolbar is a little and simple application that allows you to build your LinkedIn network from frequent contacts easily, manage your contacts in Outlook, and always stay connected to the network. One of the things I like in this program is its intuitiveness and ease of use, since it suggests you which people you should invite based on the e-mail frequency, and enables you to invite them with only one click. It's an excellent way to have a full-time access to your LinkedIn contacts and information even when you are not on the LinkedIn Web site. This incredible program also allows you to update your Outlook contacts with LinkedIn profile information, see frequent contacts that are not in your network, and also receive notifications when your contacts change their LinkedIn profiles to stay always updated. Moreover, you can also search contacts by keyword, name, title and company. Another useful feature is the ability to create an Outlook contact record from any highlighted text. With LinkedIn Outlook Toolbar you can also view LinkedIn mini-profiles of everyone that emails you, access LinkedIn simply with one click, and use the dashboard to know everything and stay up to date with your network. It supports Windows XP/Vista, Microsoft Outlook XP (2002)/2003/2007.