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As mentioned in the earlier post that Amazon.com a leading shop mart website has been under a series of DOS attacks and in effect has caused the amazon.com to be down. In a shocking turn of events the Google ads network better known as Adsense has also been unavailable for more than 3 hours now, from 11 p.m(IST). Though the exact reason more this is not know though the official have a regret note put up, although this is not any of the regular maintainence downtime for Adsense.

The effect of this sudden downtime is still unkown and a matter concern for all webmasters as Google adsense is one of the biggest passive earner and largest ads network available based on web page contexts. It has been earlier observed that CTR get as low as half after a crash this is major issue as this time the adsense was itself and hence the ads were not being available.

It’s imperative that publishers implement AAs instead of PSAs and track AA impressions via web server logs or other logging mechanisms if they want to know the true percentage of impressions that are paying ads and want to know the true CTR (clicks of paying ads divided by paying ad impressions). This effect is often called Adsense Flux in webmasters terminology.

In 642-825 exams, students who have passed 642-436 or 70-293 have a very clear edge over those who have only done their 70-294 or 70-536.