For me, same adsense account across 5 domains.
Focus on building more links from more reputable sites especially those Web 2.0 ones.
Absolutely, if the updates include adding newer contents to the page.
Onpage SEO helps as well as submitting your site to directories. I don't see any problems submitting to directories while optimizing. Use proper...
Yes, it contributes most of my traffic.
First and foremost, $7-$10 per day is NOT bad at all. To increase the earning, you can always search for higher value keywords. Try "football...
A wise man once said "Buy them. Start small. Grow links gradually so your page will rank higher "naturally""
Non reciprocal and manual ones.
The more links you have especially from reputable external pages, the higher your PR will be.
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