Msg#: 5550 posted 10:08 pm on Mar 10, 2005 (gmt 0)
I have taken up the habit to go through my referral logs every day to block referral spammers from my site. They come in all kinds and recently I've even seen some serious sites using this strange technique to catch new visitors (and raise their pagerank).
But today I found two new sites doing it for AdSense clicks! Both sites are in the same area, and both serve up pages with almost nothing but a text logo and two AdSense skyskcrapers.
Almost I wrote. There is some content. At the bottom of the page there is a 50px high iframe stuffed with keywords in the form of scraped content.
Both sites look just the same. Even the skyscrapers had the same color scheme, but they are hosted on different servers with different ISPs.
At the same time I have been trying to figure out how on earth they can have that many ads on their pages.
Just trying the obvious keywords on these pages in Google searches gives no ads whatsoever. But they have somehow managed to come up with combinations that render 11 perfectly targeted ads on both domains.
Msg#: 5550 posted 10:47 am on Mar 11, 2005 (gmt 0)
Referral spamming... I can talk for hours about it, but in general it is a technique where you unleash a bot that surfs blogs (or sites suspected to be blogs) in order to make an impression in these sites referral logs.
The bot pretends to be coming from a certain site or page, and if the blog visited has a publicly published page with referral data (which very many blogs have) their url will show up in there.
The spoofed referral URL will then get clicked on, at least by the webmaster/blogger and probably also by others. Referral spammers also hope to gain Google PR and whatever MSN Search and Yahoo calls it since search engines regularly spider most blogs.
The NOFOLLOW link attribute was introduced to prevent blog comment spam, but will also do the trick against referral spamming.
More about the NOFOLLOW link attribute: <snip>
[edited by: Brett_Tabke at 5:47 pm (utc) on Mar. 11, 2005] [edit reason] no blog/spam links please [/edit]