Most are fairly familiar with the current trend in splogs that are stuffed with three AdSense units above the fold of the page.

These pages use blackhat SEO techniques of scraping RSS feeds from multiple blogs. They are then displayed on Google (if the SEO-er is innovative enough).

If you use partial feeds, you’re safe, right?

Here’s a Python Webstemmer that takes it all to a new level.

“Snews” — scraping the news sites

Here’s their claimed accuracy:

New York Times	488.8/552.2 (88%)
Newsday	373.7/454.7 (82%)
Washington Post	342.6/367.3 (93%)
Boston Globe	332.9/354.9 (93%)
ABC News	299.7/344.4 (87%)
BBC	283.3/337.4 (84%)
Los Angels Times	263.2/345.5 (76%)
Reuters	188.2/206.9 (91%)
CBS News	171.8/190.1 (90%)
Seattle Times	164.4/185.4 (89%)
NY Daily News	144.3/147.4 (98%)
International Herald Tribune	125.5/126.5 (99%)
Channel News Asia	119.5/126.2 (94%)
CNN	65.3/73.9 (89%)
Voice of America	58.3/62.6 (94%)
Independent	58.1/58.5 (99%)
Financial Times	55.7/56.6 (98%)
USA Today	44.5/46.7 (96%)
NY1	35.7/37.1 (95%)
1010 Wins	14.3/16.1 (88%)
Total	3829.1/4349.2 (88%)

It’s fairly accurate with an 88% average while scraping professional news sources. If you read a lot of news online, you’d be fairly familiar with how much separation of text there it — meaning, news items broken up with random ads. Now, how much easier would it be to scrape Wordpress blogs that EACH have the SAME EXACT template structures? Not too much.

Below is how text is broken up:

$ cat cnn.txt

!UNMATCHED: 200511210103/www.cnn.com/                                             (unmatched page)!UNMATCHED: 200511210103/www.cnn.com/privacy.html                                 (unmatched page)

!UNMATCHED: 200511210103/www.cnn.com/interactive_legal.html                       (unmatched page)

…

!MATCHED: 200603010455/www.cnn.com/2006/HEALTH/02/09/billy.interview/index.html   (matched page)

PATTERN: 200511210103/www.cnn.com/2005/POLITICS/11/20/bush.murtha/index.html      (layout pattern name)

SUB-0: CNN.com - Too busy to cook? Not so fast - Feb 9, 2006                      (supplementary section)

TITLE: Too busy to cook? Not so fast                                              (article title)

SUB-10: Leading chef shares his secrets for speedy, healthy cooking               (supplementary section)

SUB-17: Corporate Governance                                                      (supplementary section)

SUB-17: Lifestyle (House and Home)

SUB-17: New You Resolution

SUB-17: Billy Strynkowski

MAIN-20: (CNN) — A busy life can put the squeeze on healthy eating. But that     (main text)

         doesn’t have to be the case, according to Billy Strynkowski, executive

         chef of Cooking Light magazine. He says cooking healthy, tasty meals

         at home can be done in 20 minutes or less.

MAIN-20: CNN’s Jason White interviewed Chef Billy to learn his secrets for

         healthy cooking on the run.

…

SUB-25: Health care difficulties in the Big Easy                                  (supplementary section)

!MATCHED: 200603010455/www.cnn.com/2006/EDUCATION/02/28/teaching.evolution.ap/index.html  (another matched page)

PATTERN: 200511210103/www.cnn.com/2005/POLITICS/11/20/bush.murtha/index.html      (layout pattern name)

SUB-0: CNN.com - Evolution debate continues - Feb 28, 2006                        (supplementary section)

TITLE: Evolution debate continues                                                 (article title)

SUB-17: Schools                                                                   (supplementary section)

SUB-17: Education

MAIN-20: SALT LAKE CITY (AP) — House lawmakers scuttled a bill that would have   (main text)

         required public school students to be told that evolution is not

         empirically proven — the latest setback for critics of evolution.

…