I've seen a lot of political blogs do this when they get linked by a big site, say Instapundit, where I got linked from yesterday, and they put up a message that says, "Welcome Instapundit readers!" I was wondering how to make a customizable message that displays whatever website someone came from if it was referral traffic. Instead of writing the name of the website after getting linked, and showing it to everyone, how could I make it so it automatically changes for each visitor based on where they came from?
Have a look around the web for php that will do an "if instr(referer)='digitalpoint' then echo ' welcome dp forum users!' Of course the php is more intelligent and there's tons of snippets out there to do this. I don't have www access at the moment to check properly.