可用性限制：用老版本Flash设计的网站，后退键没有作用：点击后退键会使你退出Flash网站，而不是返回上一层网页。同时，链接以及非链接的标准颜色会发生改变，并且用户须控制需要利用的文本尺寸。
Furthermore, many times Flash sites go against the interactive nature of the web. Since Flash technology favors a "presentation style" approach that resembles television, users are many times reduced to mere observers that get bored after a while, no matter how good the graphics look.
而且，Flash 经常带来网站交互问题。由于Flash支持类似于电视的呈现模式方法，所以用户经常作为观赏者出现。不管画面多么精美，过一段时间，用户就会对内容产生厌烦。
Search Engine Constrains: Although large search engines like Google now have some Flash indexing capabilities, these are still very limited. You will definetely have a hard time achieving high rankings with a Flash site. One option around this problem is to design a second, search-engine-friendly HTML version of your site. This, though, usually represents an unnecessary expense in both time and money, since in most cases the HTML version alone will get the job done.
搜索引擎的限制：尽管像Google这样的大型搜索引擎，现在具备了对Flash做索引的能力，但搜索内容仍然非常有限，所以Flash网站不会在搜索引擎中获得好的排名。解决这个问题的一种方法是：利用HTML设计网站，这样的网站会有一个好的排名。利用Flash设计网站，会增加不必要的金钱和时间开支，其实 HTML网页就可以完成所有的功能。
Although few, there are some instances when Flash technology can actually be helpful:
尽管Flash存在以上几个缺点，但它同样有自己的优点：
a) When you need to show a presentation, for example a demo of your product.
可以运用Flash，展示内容，比如：展示公司样品。
b) To develop interactive games, like those found on sites for kids like Sesame Street, Nickelodeum, or Yahoo! Games.
开发互动游戏时，可以运用Flash，比如：Sesame Street、 Nickelodeum, 、Yahoo! Games等儿童游戏，都使用了Flash
c) When you want to dress up a minimalist site. In this case, a small Flash animation or banner embedded in an HTML document will not consume excessive bandwidth, will load fast, and will enhance the appearance of a bare-bones site.
当你想装饰简约网站时，你可以运用小型Flash动画，或者在HTML文件中插入标语性质的Flash，这样不会占用过多的宽带空间，下载速度很快，并且可以增加网站的观赏性。
Although Macromedia (the company that developed Flash) is actively working to improve Flash's usability problems (they even formed a partnership with usability guru Jakob Nielsen in 2002), issues like slow downloads and search engine un-friendliness still remain a problem. Until these issues are addressed and solved, you will be better-off by only using Flash in those rare instances when it actually enhances the value of your content.
