looking for advice on weighting
What is the best way to use weighting. lets say i have 5 sites and want to show one site more then other in a link exchange.
But also what if i have 35 sites and want to show certain ones more then others.
Now what i was thinking was to have it randomly chose 5 url's then out of that 5 chose the highest weight.
But only one problem, what if i only have 5 url's , and i chose it to use the highest weight, well then it will always show the same url.
So any advice would be great.