Guest Blogging is one of the most effective ways to boost your DA (Domain Authority) and Page Rank. When Google notices that popular websites are linking back to your website, your rank increases in Google's index. But again, having it on spammy, malicious or flagged websites hurts your rank just as much.
To make things easier for you, I am offering to publish your article with backlinks to Engadget which has a PR8 DA94 TF81 CF90 Alexa 1024
Please keep in mind that the articles can only be under the genre 'Technology'.