Web sites may change daily, so you must revisit them frequently. Web sites may change daily, so you must revisit them frequently. Although the computer age has made researching more convenient, finding reliable sources online is sometimes difficult. Although the computer age has made researching more convenient, finding reliable sources online is sometimes difficult. Notice the web site extensions to find reliable sources. Notice the web site extensions to find reliable sources. Even though writing research papers using the Internet is now easier, looking up resources in the library was more fun.