I couldn't agree more with this post. Don't duplicate your exact site, but if you can duplicate what made it successful you will be in business for a much longer period of time. Bottom line, you don't want all of your eggs in one basket(site). For the same reason, you need more income sources than just Google adsense. Disclaimer: You can do overkill though. If you have too many sites, you may begin to get neglect them which isn't good either.
Nice work, this was some inspiration and well needed inspiration. I just hit a $150 month in adsense and I'm looking to expand my revenue options. Thanks for the encouraging stats release.
Yay! Another DP user with a cheery success story I hope to have my own post in the coming months. There is a really nice post at sitepoint of a guy making quite a bit.
Great Job Carl. Here's hoping the success continues to grow from here on out. Hopefully I'll have a chance to write about similar success as my own experience develops.