backlink Что нужно знать перед покупкой
购买反向链接风险极大。谷歌强烈反对这样做，你的网站可能会因此受到惩罚。Set up a Google Alert to send you daily emails when the search engine algorithm discovers your brand name being mentioned.(See my guide on how to use keywords in backlinks if you need help with your anchor text ratios for better optimization.)Ha