sun818 - 2:39 am on Oct 6, 2004 (gmt 0)

Yes, block site is definitely useful. This will raise the bar on spammy affiliate sites to have actually provide information in a useful way to pass the bar of the human eye.

I know many sellers of tangible products will find this very useful for competitive research since this is an effective way to remove affiliate sites that provide no value in terms of additional product details, opinions, reviews. I'm certainly very tempted to change my home page from Google to Yahoo for this very reason.

This is also an excellent research tool for businesses that want to search vertical industries and categorize specific links for retrieval later. Adding notes is a nice touch which bookmarking a site can not do.