If you don't know the point of doing it then there are millions of other things to pursue. It seems foolish to spend time on something you have no idea how to use.
Note that I wrote Introduction to Web Site Scraping. I don't suggest you get bibliographic data that way but there are many web sites that people do need to get information from that don't provide more direct ways to obtain the information. Search the internet for "airfare comparison website". Airlines don't want to make it easy to do that. Many other websites don't want to make it easy to download pictures and/or videos.