What can you use to stick posters up with??

I put my posters into a clip frames then hung that on the wall, therefore protecting the poster and the wall.

Most things will leave a mark if you leave it up for a long time - even white tack and masking tape. You may just have to either manage without posters or be prepared to touch up the wall with a bit of paint when you take them down. Alternately, if you have a picture rail you could frame stuff and hang it from the picture rail.

i have posters all over my wall i use ticky tack its usally blue but its is really great because it doesnt rip of the paint :)

I heard if you use toothpaste, it sticks really well and you can just wipe it straight back off again without leaving a mark

You Could use Celletape :D Lol, Or Glue Them With Pritt Stick? :D Hoped i helped? Beckz =)

I use the white tacky stuff that comes with the glow in the dark stars you stick to the walls in a room. I dont know if it is the same as the blue tak but you can give it a try, I have never really had a problem with the white stuff.

TAPE

Try masking tape. You can stick it on the back of the poster by curling it around itself, sticky side up and then stick to the wall. It should not leave any marks, nor should it tear paper or pull paint off. And by the way, those sticky tag things are rubbish. They have ruined my mother in laws walls.