I can't View My Sites!

This happened last Saturday, I can't view my other sites. It is not only my other sites but also some other ones. I was a little bit scared. I thought something is wrong with my computer or there might be some cookies or cache's that were disabled. I have no idea because I am not a computer expert and don't exactly know what's going on. I tried to open it a lot of times but still, it wasn't working. I was also scared because I heard that some other bloggers' site were deleted. One reason I heard was that, the sites they owned were not updated often. Mine is different because I always try my best to update my sites. I was thinking to open it the following day.....voila!!! I had them opened again!! thanks goodness!! of course my nerves were alive again!!happy blogging!