write a script to periodically scan 4chan for rekt threads, auto refresh each thread when it appears and get it to capture the gif, jpeg or webm with the most replies... or maybe the top three in each thread... add to your database of rekt imagery... check for duplicates... periodically post said gifs, jpegs and webms on your site
set up facebook page, selectively post to there, use page to post to any news story somehow vaguely linked to people getting 'rekt' in a lame attempt at getting people to like your page
monetize with the usual crappy advertising, affiliate links etc...