_blank is outta here, sorry i mean depreciated
Also on Cantrell's blog there's a comment by Matt Shobe (near the bottom, posted at November 26, 2003 10:48 AM) about different styles for different links ("solid underline = new topic in existing window while dotted underline = popup window"), as seen in Microsoft viewer App. Personally I like, its simple and easy to understand, obviously some issues with Images etc, but for general text i think this would work well.