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Paul sees his own photos on the "My photos" page. He clicks on the one which Colby commented on, and the site takes him to the "View photo" page. Since he is the owner of the photo, there is an "Edit photo" link on the top-right corner. He clicks on it, and the next page allows him to change the information, which he does accordingly.

Analysis

Dimension

Pros

Cons

Learnability

> There is only one search box for all types of search terms, similar to popular search engines 
> The user can click on the photo in the front page and start viewing the picture right away. 
> The website does not requires proficiency in English to browse the website. 

> The user may not know what keyword to use to get good results. 
> It is not immediately obvious how the uploader can upload the images. The user will also do not know that the photos can be uploaded in batches by selecting the whole directory. 

Visibility

> Uploading photos and entering comments gives feedback right away. 

> The view page does not show the pictures in the same series (uploaded in the same date by the same person) as the current picture. 
> The Manage Photo tab does not show all the pictures that the user uploaded. So the user may have trouble finding the correct picture to edit information. 

Efficiency

> There is only one search box for all types of search terms. The user does not need to categorize his search term first. 
> Advanced search and refined search are also available for more refined results. 
> Photos can be uploaded in batch and the information can be copied down to the next row. 
> Uploaded photos are categorized in batches of uploading date. 

> The user needs to go to the advanced search page if the user only wants to search by a particular type of search term. 
> In the view page, there are no controls for viewing the next picture of the same series. 
> There is no option for editing individual picture; the Edit Photo Info page only allows editing photos in batch (except the case that the batch has 1 photo). 
> After viewing the photo, the user cannot easily access photos from the refined search list. The user may have to use the back button in the browser. 

Error Prevention

> Photo information can be corrected using the Edit Photo Info page 

> Some people may supply incorrect photo information, which leads to contaminated search results. Since only the uploader can change the photo information, that error may persist for a long time. 

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