The IDF announced last year that they would use social networking sites for propaganda purposes. Aside from that, Israel has been doing this sort of thing for a very long time, long before computers came on the scene. The lesson for Hamas is, if you want to beat Israel, you must act like Israel. By this, I don't mean it is necessary to carpet bomb cities and wipe out whole neighborhoods. I am referring to the PR war. Better late then never, but Hamas has a very long war to go to catch Israel in the propaganda war.
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from the article: Hamas leaders open Facebook pages in attempt to woo Palestinian public