Too tired of deleting “junk mails” in your email box?  Junk emails and spam are becoming a great and aggravating problem in the World Wide Web or the Internet.  Some people may become so awfully annoyed with the dozens and tons of unsolicited commercial emails or spam that they are forced to change email addresses from time to time. 
Spam are those mails flooding your email box with several copies of the same message.  So it is like a chain letter where the source needs to send the letters, with the same message, that is, to a certain number of people to get his or her much-desired wish.  Spamming is actually a scheme being used by several spam sources to impose their message to individuals who would not opt to receive it given the choice.  Who are the usual spam sources?  These are probably, but not limited to business-related infomercials, often for fraudulent products, and those scheming get-rich-quick ideas, or other sham services.  There is no likely cost for sending spam; the cost actually is not shouldered by the spam sources but usually the recipient or the carriers of the spam. 
You may wonder where on earth do these spam sources get your email address? 
Researches on spam sources found out that email addresses posted on websites or in newsgroups most attracts spammers.  Spammers or spam sources use a software program that can gather and record all email addresses listed on websites and all who posts to public newsgroups.
At present there is no easy way to prevent spam or junk mails.  But there are some tips to avoid being tracked by spam sources.
Your first defense against spam sources, change or disguise email addresses posted in a public electronic place.  It is rather ideal not to sign out any online member directories.   This is like giving them your go signal to distribute your email address to spam sources. 
The numbers of spam sources are ballooning everyday.  So be extra conscientious when you encounter online forms that requires you to disclose  your email address.  In particular, pay attention to any options discussing how the address will be used.  Be cautious when ticking boxes which could allow them to send you emails or share your e-mail address others. 
Have several email addresses for specific purposes.  This perhaps may be the best way to avoid spam sources.  Instead of using a single email address in all your all transactions, use disposable email addresses which may allow you to immediately cancel the address if spam sources were able to track it.  Take note that many web sites offer free email accounts and this gives you the freedom to designed one-time use of emails. 
Finally, to cut down the numbers of spam sources, use spam sources filters.  With the mushrooming of web hosts offering free email services, these also come in handy with a reliable spam sources filtering.  Although they may not totally guard you against spam sources, but surely they can get rid of several spammers and spam sources tremendously.