I started a new site in April this year, wanted to get it high ranked quickly before the summer (it's a summer niche) and did some aggressive backlinking. It worked great at first, I ranked on the first page of google for multiple keywords and made a lot of money. But as you guessed it, I got slapped with the -50 penalty. I've been trying to get it back but have been unsuccesfull. I've tried quality backlinks with a high diversity in keywords and adding original content. I'm not sure what to do. Start a new site and take it slow this time with the backlinking or keep trying to build backlinks and adding content. I did a backlink analysis and it doesn't look very good. A lot of backlinks are from the same sites with high obl and there's no way I can delete them all. I also do have quality backlinks and I got the site to a PR4 within 3-4 months so it would be a shame to let this one go. Any advice?