Discussing whether Ynetnews is a reliable source, and the preicse nature of a "tabloid", is really beside the point. The issue is - What do you want to use it as a source for? Dawkins mentioned "the Jewish lobby". A few people have predictably seized upon the opportunity to call him anti-semitic, regardless of the evidence. Sure, it's a news story for a few days. But we are dealing with an encyclopedia article here. Does this little incident add anything meaningful to an understanding of the subject of the article? Rather less than the fact that Dawkins was parodied on South Park, actually.