A blogroll is a list of links to other blogs. It’s like the links on your website’s Resources page, only the links are to blogs containing content of interest to you and your target audience. Generally, a blogroll is located on the side of a blogger’s frontpage. If your blogroll becomes very long, it can be a separate page linked to from your blog’s frontpage.
@dventures Online’s blogroll is located on the right hand side. It will contain links to more information about Blogs as well as to the blogs of its clients.
Do you need one?
Most important is to link to quality content. If quality content is not yet available, postpone adding your blogroll until it becomes available; otherwise, yes, it is a good idea to have a blogroll.