Pasteku.com is open to be used in any way, though here are some suggestions:

A bookmarking tool: Collect a list of hyperlinks and submit them. All you have to do then is remember your paste's address to access your list any time. This may be especially useful if you need to access the sites on your phone.

A place to share discussions: Had a lengthy hyperlink filled discussion with someone on Facebook? Copy it here to preserve the links and share it to friends.

An anonymous blog: As this site features no true logins or usernames, anybody can submit a paste within seconds. Use it to speak your mind without having to identify yourself in any way.