Is it a virus that cause it . . .

From time to time, mail disappears, even while I am reading it. Mail I send does not arrive to the recipient. Lately when i have made comment on blogs, ensured that they have been accepted and seen it displayed before i leave the site. . . Next time i go to the site, my comment have disappeared. The case is that I don't believe that it has been removed by the owner of the blog, because it doesn't give that sign in the comment-box.
(Latest at the blog of Maricopa Mark and BBC)
I have also had blogs other places where I all the time had the experience that whatever I wrote about, one or another reader of my blog hit the "abuse-button" so I got a mail from the host of the service that I had to remove the post.

I don't think my blog is of the worse. Neither when it comes to use of language, porno, criticism of politic or religion, or anything else that should cause such strict supervising of my blog.
If the reader of my blog don't like it, then they don't have to read it or come back to my blog.

When I go to others blog and see people give comments only to start a quarrel and they come back again and again to continue the arguing, I wonder. . . What kind of people are they? Why do they come back to that blog they don't like? Why do they read it? You don't have to agree with the owner of the blog, but why start a quarrel?
This is my blog and my opinion about this and that. You have your opinion and I would like to hear it, but as grownups I expect people to be civilized.

From time to time I also get these virus-alerts . . . And afterwards I get this well meant information’s; that one can only get viruses by opening files or attachments.

But I have been in the situation where my computer constantly got messed up by viruses, worms, backdoor-Trojan etc. etc,
I had a PC. engineer here every day for months to help me to get rid of the mess.
I tell you . . . I got it by opening ordinary e-mails.
By attachments, through files, through hackers, through pop-ups and more so . . . .
I got it through messenger-chat . . . by code-word.
After installing all kinds of alerts, anti-virus, spy-ware etc . . . discovered that every time one of those I were chatting with on messenger used a certain word, the alert started to blink. . . I had got a virus.
It ended with that I stopped chatting on messenger, changed e-mail address, and didn’t use the computer for long time . . . I had to clean it out . . . hard-disk, files, floppies, everything . . . over and over again.
Now, I have made the habit to clean my Pc. with Anti-virus and Spy-ware and erase the history every evening before I go to bed.
I was told that if you have hackers who open you computer from another place to spy on what you have done during the day . . . they can transfer Viruses from their PC to yours.
I don’t know if this is correct, but after I have started to be major careful I have had no problems.
But . . . Is there any computer-engineer out there who can give professional, correct information? Or . . . is it so that the information also is only half, because it’s business to send out Viruses, so they can sell their work and software to the “infected client?”