Online advertising is a form of advertising that uses the Internet and World Wide Web. Apart from it being accessible from around the world via the Internet, it is also usually instantaneous; conventional, printed advertising has a delay time due to printing. With recent years, online advertising has evolved and now has many variations. Listed below are a few variations most frequently encountered.

Email advertising

An increasingly used variation of online advertising, advertisers make use of mailing lists obtained via website memberships, surveys, or forms. However, an "opt-out" option should be included to make it legitimate, as well as differentiate it from Spam. This method of advertising is generally not very well received by its recipients as most users will treat advertising email as spam, regardless of whether it is a legitimate advertisement or not.

Rich media advertising

Rich media advertising is becoming extremely popular, and a majority of these are generally done using Adobe Flash. This variation makes use of graphics, color, page layout, animation, and other various elements to attract attention. Some users might consider these ads a nuisance as they can distract attention from the actual content of the page being viewed. Some popular examples of rich media advertising are banner ads (static or animated ads with a fixed height and width), "fake" banners (banners that appear on the user's screen usually as a dialog box with buttons that simulate an alert or error message), pop-ups (a new window which "pops out" suddenly in front of the current one and displays an advertisement or entire webpage) and video ads (similar to banner ads but displays actual video clips instead of a static or animated image).

Contextual advertising

One of the most popular variation of online advertising, it also usually gives the highest Return On Investment (ROI), can reach out to a wider audience, almost instantaneous, and is the most available and affordable. Contextual advertising are usually ads that contain only text or static pictures.

Malicious ads or Malware

Malware is an advertising variation that is considered unethical by many, and may even be illegal. This variation of advertising include having multiple pop-ups appear instantaneously and unseen applications which may alter system settings. These applications are labeled spyware or adware. They usually go under the pretense of displaying the weather or a "harmless" looking search bar. Some programs are even Trojans, which are difficult to uninstall or get rid of, and are potentially harmful to computer systems. They may retrieve sensitive information like usernames and passwords.

Dean currently works in an IT firm, and writes short articles when the bug bites him.

A few popular sites that provide free services for contextual ads would be USFreeads.com, Kijiji.com and Ablewise.com Free Classifieds.

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I have come away from the park with a huge respect for these creatures, and respect for the people who dedicate their lives to keeping and researching them. It is a hard job, and only seriously interested hobbyists will last long in the game.

Published in Reptile Care Magazine, Volume Other Issue 4.

For more information about Crocodiles and crocodile farming, please visit www.petclubuk.com

By Chris Jones
Director of Pet Phone And Sim Cards UK Ltd.
http://www.petclubuk.com

This article illustrates the amazing diversity found within the animal kingdom. Below, I have compiled what I feel are some of the most interesting facts about reptiles and their behavior.

Interesting Reptile Facts

• There are more than 8,000 species of reptiles on the planet, and the live on every continent except Antarctica (where it is too cold).
• Most kinds of reptiles do not tolerate the cold very well. But the Blanding's turtle (Emydoidea blandingii) is sometimes found swimming under the ice in the Great Lakes region of the United States.
• Reptiles are among the longest-lived species on the planet. For example, large tortoises such as the Aldabra tortoise can live for more than 150 years. Alligators can live nearly 70 years. Ball pythons, a popular type of pet snake, can live up to 40 years (consider that before getting one as a pet).
• Most of the world's snakes (nearly two-thirds) are non-venomous. Only about 500 snake species are venomous, and of those only 30 - 40 are considered harmful to humans. In other words, less than 2 percent of all snakes are considered harmful to humans.
• It is a fact that more Americans die each year from bee stings than from snake bites.
• With regard to reptile fact #4 above, the opposite is true in Australia. There are actually more venomous snakes in Australia than non-venomous snakes. The inland taipan is one of the most popular of these venomous Australian snakes. Australia is the only continent where venomous snakes outnumber non-venomous snakes.
• Certain types of snakes can go months without eating. This is especially true of the big constrictors, such as the Anaconda and the reticulated python. Snakes eat large meals (relative to their body size), and they have much slower metabolisms than we humans have. This partly explains how they can go so long between meals.
• "Cold-blooded" is not the best way to describe reptiles. Their blood is not necessarily cold by itself. But they are ectothermic, which means they get their body heat from external sources. Reptiles cannot regulate their body temperature internally as humans do.
• Snakes and lizards flick their tongues in the air to capture scent particles. They don't smell through their noses like you and I. Instead, the use their tongues to collect scent particles and then pass the particles over something called a Jacobson's organ to decipher the air around them. This is partly how reptiles hunt for food.
• True to its name, the African egg-eating snake (of the genus Dasypeltis) prefers to dine on the eggs of other animals. It will swallow the egg whole, and then use tiny "spikes" extending internally from its spine to crack the egg open and swallow the nutritious contents. Lastly, it will regurgitate the unneeded egg shell in a neatly folded piece.

If you enjoyed this article and would like to learn more about this subject, be sure to check out the informational resources listed below.

Brandon Cornett is the pubisher of Reptile Knowledge, an educational website full of information about lizards, turtles, snakes and other reptile species. Learn more by visiting http://www.reptileknowledge.com