Why Link Exchange Considered As Black Hat By Google

Google is not like yahoo and bing , because it only work on fair basis. In other search engines you can pay and get high rank unlike Google. If you are an SEO person than you must have idea about Black Hat SEO and White Hat SEO techniques. Link Exchange considered as black hat SEO, but why? The reason behind it is the division of PR between the parties. Google work on fair basis and any technique which vanished these fair meanings considered as Black Hat. Let me tell you about the PR division.

Suppose we have two site s, site A and site B. Both having same page rank value. We need to implement link exchange technique on them. Let me explain how link juice will be divided in both sites.

F(x) value of link juice transfer when site link to another. Page rank is like worth of your site and a part of it contributes for every outbound link of your site. For every dofollow link juice transfer , this is the reason why no one allow to place dofollow link on site, blog or any type of web page.

When site A first place link on it for site B, page rank of B will be up when search engine crawled it. Now the link from B to A will have more link juice as the Rank of B is up. In this case B is getting less than A.

So link exchange seems to be link division on equal basis but it is not actually.

There are some other disadvantages of link exchange. Like when exchange link from non relevant site there will be no chance of traffic but only the waste of your own link juice. Bulk link exchange will triggers search engines that site having some un natural behavior.

Link s the partners place to show without no follow attribute but later they make links with nofollow attribute. Which give you no point of placing link on them.

So be precautious when you are using link exchange technique for your site. For Professional SEO services consider the advice of experts.

Bio
I Shumail Ayub, an SEO expert. Working as SEO analyst in CuttingEdge Projects the leading business consultants in Leeds, UK.

High-Fat Diets, Obesity and Brain Damage

Many of you have probably heard the news this week:

High-fat diet may damage the brain
Eating a high-fat diet may rapidly injure brain cells
High fat diet injures the brain
Brain injury from high-fat foods

Your brain cells are exploding with every bite of butter!  Just kidding.  The study in question is titled "Obesity is Associated with Hypothalamic Injury in Rodents and Humans", by Dr. Josh Thaler and colleagues, with my mentor Dr. Mike Schwartz as senior author (1).  We collaborated with the labs of Drs. Tamas Horvath and Matthias Tschop.  I'm fourth author on the paper, so let me explain what we found and why it's important.  

The Questions

Among the many questions that interest obesity researchers, two stand out:

1. What causes obesity?
2. Once obesity is established, why is it so difficult to treat?

Our study expands on the efforts of many other labs to answer the first question, and takes a stab at the second one as well.  Dr. Licio Velloso and collaborators were the first to show in 2005 that inflammation in a part of the brain called the hypothalamus contributes to the development of obesity in rodents (2), and this has been independently confirmed several times since then.  The hypothalamus is an important brain region for the regulation of body fatness, and inflammation keeps it from doing its job correctly.

The Findings

Read more »

Junk Free January

Last year, Matt Lentzner organized a project called Gluten Free January, in which 546 people from around the world gave up gluten for one month.  The results were striking: a surprisingly large proportion of participants lost weight, experienced improved energy, better digestion and other benefits (1, 2).  This January, Lentzner organized a similar project called Junk Free January.  Participants can choose between four different diet styles:

1. Gluten free
2. Seed oil free (soybean, sunflower, corn oil, etc.)
3. Sugar free
4. Gluten, seed oil and sugar free

Wheat, seed oils and added sugar are three factors that, in my opinion, are probably linked to the modern "diseases of affluence" such as obesity, diabetes and coronary heart disease.  This is particularly true if the wheat is eaten in the form of white flour products, and the seed oils are industrially refined and used in high-heat cooking applications.

If you've been waiting for an excuse to improve your diet, why not join Junk Free January?