Add to this the popularity of international bulletin boards, through whose networks the spread of computer viruses makes all the more real the expression, "remote places are as if next door" --there is no distance they cannot traverse.
再加上近年國際間電子佈告專欄連線系統（Bulletin Board System）的盛行，經由其網路連線，電腦病毒的傳播更是「天涯若比鄰」，無遠弗屆了。