How do you appraise a site that has high traffic (40,000/mo), high pageviews (over 100,00 a month) and length on site, low bounce rate, a unique domain and theme and to top it off has 21,000 followers since you built it on a tumblr platform? I see that most people use a 5X monthly earnings, but here is the problem... I've never advertised on the site, so I don't have any earnings to multiply. I have done so to grow the loyal following and traffic fast, and that worked. I just have no clue how to price this or if you are even allowed to put tumblr based websites on flippa, or elsewhere. Any ideas how I value it?