There was one wonderful artcle in WJS this year pointing out the reality of web world. The individual IP cookie analysor can provide the companies a more customerised sale in one smart way. Some unidentified airlines/hotels are doing it as pilot programme already. The soft hecker approach by online sales establishment will quietly eat into your computer just to make another 10 dollar or 20 by monitoring customer behavour through cookies...The theory was if one customer repeatly search some route in short periods, the pattern will be recorded and the price for certain route will rise till customer make the buy within the predicted period or the searched time expires. It is all doable. Website can already generate the number of enruiries and the actual booking. Webmaster can see the IP address as well. What the airlines/hotels/online shops are aiming for is the simple programme language involve with cookie to make extra cookies out from customer...Be aware.