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- Wed Dec 28, 2011 2:10 am
- Forum: Hotel worker talkative
- Topic: Re: How do you think about home stay travel?
- ตอบกลับ: 8
- แสดง: 5430
In 2008, North American advertisers spent US$13.5 billion on search engine marketing. The largest SEM vendors are Google AdWords, Yahoo! Search Marketing and Microsoft adCenter. As of 2006, SEM was growing much faster than traditional advertising and even other channels of online marketing. Be...