Web 2.0 has helped presentation software a lot, i has helped allow the user of the software to add multiple new features, coming in many different forms. this helps the presentation as they can use multiple ways of presenting the object/design etc they are doing. Web 2.0 has allowed sharing of audio, video, texts, images and many more different types of content. this content can be found on web pages like you-tube. websites like Google are search engines and you can search for images that appear on the Google website but have actually been posted on another website, meaning you don’t have to go onto the website, just search for it. 
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