If you would like to know what UNRWA does, you might want to check out an article in Middle East Forum that was published on October 12, 2009. Written by Nitza Nachmias, the article is called: UNRWA at 60: Are There Better Alternatives? Here is an excerpt:
As we have shown, a major component in UNRWA's survival strategy is the nurturing of a mutual dependence syndrome, so that the Palestinian community thinks it cannot function without UNRWA's inflated bureaucracy. UNRWA needs the myth of "five million refugees" and in exchange, provides the Palestinians free services. The truth is that UNRWA's tactics actually hinder the peace process and any realistic resolution of the refugee issue. UNRWA's baseless and inflated registration numbers feed the impossible demand for a "right of return".
It's a long article but well worth the read for those who prefer information over ad hominems or propaganda.