1. Links Teppo Räisänen LIIKE/OAMK 2011

2. What is a Link? Blue, underlined piece of text? Something leading to somewhere? A relation or a reference?

3. Why Links Are Used? Web pages are a form of communication The readers of pages have different backgrounds/needs Links are a useful way for providin alternative ways of using a Web page’s/site’s contents

4. Why Links Are Used? Providing additional information is made easier by providing links Links are an essential part of hypertext/-media Vannevar Bush described the nature of hypertext in his article ”As we may think” (1945)As we may think

5. Link Types Links can be categorized in many ways Nature (opinion, explanation, additional information…) Media type (text, sound, video…) Target (new page, another site… Inside a Web page these link types can be formatted in different ways

6. Link Types It may be necessary to provide additional information about the link type large media files secure connections page redirects etc.

7. The Value of a Link Using a link pointing to another site needs always to be considered Bad design of the target page Dynamic technologies (JavaScript, Flash) Pop-up windows Shortageness of the target page Information security problems

8. Permission to Linking? Normal linking to another site does not require permissions There are still some juridical points: Use of frames Linking to downloadable files Copying another’s sites content to another server