Dumpz.org is just another so called pastebin website. That simply means that you can permanently store some fragment of programming code on dumpz.org and share link to it to your collegues and friends (and enemies, if you will). Also you can store any text information, as well.
What if I want to highlight the syntax of the pasted fragment of code?
Well. This is what the dumpz does!
What is time-out for storing data on dumpz.org?
No time-out! The data will be on dumpz.org untill I delete them manually or untill that will do the owner of the dump. Yep, I delete some dumps manually due to the abuse requests.
I do not want anybody can see my dump
You can protect your dump with the password feature. When you create a new dump enter something into password field and nobody will have access to you dump untill he enters the right password.