Hi there!<BR>Relativley new to .net but just itchin to get my teeth into this problem... but dont know where to start!<BR><BR>A company called boldcenter(.com) have a product which tracks users movements throughout your website using small javascript snippets. This is relativley simple to do.<BR>But they also have a client app which can track users using your site in real time. <BR>I was just wondering how this &#039;instant notification&#039; works with out it being a major resource overhead in polling the d/b constantly.<BR><BR>Am i overlooking something here?? Like i said, .net newbie so perhaps i am.<BR><BR>I&#039;m just looking for some pointers to send me off in the right direction...<BR><BR>Cheers people!