Because Twitter is free for all, so does it become a haven for unscrupulous individuals looking for accounts to bother and spam. While the micro-blogging community is generally open and your tweets (if not protected) can be seen by everyone, there are those whose accounts exist solely to propagate spam and prey on weak accounts to spread viruses.
At first, suddenly finding your account flooded with the same information from the same user may be amusing or you might just dismiss it as a glitch.
Over time, you must realize that spam is not at all a good thing for your computer (so don't click just any link!). Worse, these will worm their way into your personal details and post them for all strangers to see.
There goes your privacy and safety.
Reporting Spam and Privacy Breaches On Twitter
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