Web sites didn't exist when I rushed ('88) but I can tell you if they had, I would most definitely have considered them a factor. What an amazing tool! I think that a good web-site is a must--not just in recruiting for your chapter, but in recruiting for rush at all (I wish more college Panhellenics would take the time to create good sites). I agree, poorly done sites make me sad.
The ones that are kept up to date & changed frequently (if only to add more pictures/info), lots of pictures and calendars are the best. Guestbooks are good also.
And since an AGD started this list, I'll share the AGD chapter site from my alma mater-it is extremely well done!
http://www.tarleton.edu/~agd/
Another good one is
www.aggiedeltazeta.com and
www.techaphi.com (designed by GC's very own Techaphi!)
(these 3 sites have very different styles, but they are all quite awesome imho!)