如何防止(ASP)网站被采集

<%
Dim AppealNum,AppealCount
AppealNum=10 '同一IP60秒内请求限制10次
AppealCount=Request.Cookies("AppealCount")
If AppealCount="" Then
Response.Cookies("AppealCount")=1
AppealCount=1
Response.Cookies("AppealCount").Expires=DateAdd("s",60,Now())
Else
Response.Cookies("AppealCount")=AppealCount+1
Response.Cookies("AppealCount").Expires=DateAdd("s",60,Now())
End If
If Int(AppealCount)>Int(AppealNum) Then
Response.Write "抓取很累，歇一会儿吧！"
Response.end
End If
%>