To add a line, simply append "?input=<text>" at the end of the URL.

The file contains:

<!-- NEW NEWSITEM -->
Hei.
heh
er du helt dum eller?
iajsdiajdijasd
Ich bin das grosse meister über alles meister! ich bin ROLF!!!
test
<Lak was here!>
blah
blah
Mats Er best
<bah>
blah
1337haxx0rphpsecuritysux.com
satan du suge
Gau was here
cumface
text
Kjekk liten sak..
fshalkrj
Dette var lett ja
Lett
"Juhu"\
"Juhu"\
"Juhu"
\"Juhu\"
JEG RULER VERDEN
"baaaaaaaaaaaaaaah"
whatever
Hello God! (ok so he does not exist but it's cool to say you know..)
Hello Dad!
Hello Mom!
Hello World!
w0000000
teste gåsøyne "" funker det med backslash? \"
newsitem-tull-rare-greier-ja-teste-har-dette-noen-fungsjon
3oll
tjallabais
tralla la
test2
test
huhei
test
test