SharePoint Server in simple words-

SharePoint Server 2007 helps you to manage many thing at one place while providing a number of features which are going to be a must need for any size of organization. If you want to communicate and collaborate in a efficient manner and want to save time and repetitive task then Office SharePoint Server is for you.Office SharePoint Server 2007 lets you have your own organizations Blog/Weblog, Publish the company website / portal just in time, share and manage the document across the network, comes with vacation calendar, help desk system, share your pictures, have interactive discussion with your organization members, receive incoming faxes, integrate with office outlook and many more. I’ll write on SPS 2007 again but if you are eager to know more visit this link http://www.microsoft.com/sharepoint/default.mspx