Blockposters.com

[fruitcake612]

Create large wall posters from any image for free!

http://www.blockposters.com/default.aspx

I'm going to buy some ink... BRB

 

[tlither]

You can also google for PosteRazer. Does the same thing but is downloadable. I use it sometimes. Both are nice programs.

 

[AoBfrost]

It's probably cheaper, and higher quality to buy from cafepress.com than to use dull white paper and tape the pieces together, waste a whole tank of ink, then have to buy more which cost more than a printer itself.

EDIT: Actually, it comes to around 20 dollars on cafe press for a poster, still though, cheaper than buying ink, and higher quality than what your printer can print.

 

[Odessa 086]

I don't think you can create a poster from ANY image...those too small might be horribly pixelated.