The Spine Bender
The Spine Bender tends to read their book and then just set it down anywhere around them. They don't even use any type of paper or bookmark to save their page, instead, they just keep the book exactly how it is except it's turned over on a surface. Sometimes this surface isn't even flat, which causes the Spine Bender to lose their page.
The Dog Earer
Yes, I know I just made up a word. At least I think I did... I'm pretty sure "earer" isn't a word. Anyway, the Dog Earer tends to just fold over the corner of their page, which causes the corner to have a permanent crease. This way, the Dog Earer will never lose their page because the book is also a book mark.
This person uses traditional bookmarks to save their page. They like to spice it up every once in a while by using different bookmarks, but they are still bookmarks nonetheless.
The Grab Anything Bookmarker
This person tends to just grab whatever is around them to use as a bookmark. They don't want to bend their spine, yet they don't feel like getting a real bookmark. Therefore, they'll grab that gum wrapper off the table, that old receipt, or that important note that you were trying to save and they'll use it as their bookmark.
The Wishy-Washy Bookmarker
This bookmarker tends to just do a mixture of all of the above.
I'm actually a bookmarker. I don't like bending my spine or dog earing my pages, though I will occasionally be a grab anything bookmarker as well if I'm too tired or lazy to get up and grab an actual bookmark.
What type of bookmarker are you?