One common trend among teachers seems to be a desire to decorate their classrooms with nifty artwork or posters.  If you're like me, you've probably even hung up printouts from the Internet in your classroom (of course, these are always images that you own or have secured permission to use).  If you have done this, you've discovered that it can be a bit difficult to enlarge an image to print on multiple sheets of paper.  Thankfully, there's a Web 2.0 tool for that!

Today's Web 2.0 Weekly feature is Block Posters, a super-easy to use site that lets you …

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