When I have launched CoinURL a half year ago I believed that quality Bitcoin advertising network is necessary for the market and will be profitable enough. I have seen large interest from the users, number of publishers and advertisers grown all time, but not the profits.
Average CPC and CPM rates for the Bitcoin-related ads are much lesser comparing to the non-Bitcoin. I think it can be explained that large ad networks like Google AdSense target their ads to the middle-class customers with relatively high income. Unfortunately, at this moment, Bitcoin user audience differ in this way so advertisers don't see a reason to spend large amounts on advertising. I hope this will change in the future.
All time CoinURL's expenditures had been not so big because it was located on the cheap shared hosting. Unluckily, as you could guess, hosting company decided to terminate my account as it is not just worth for them anymore. CoinURL had heavy backend and to handle requests with acceptable response time it requires high-end VPS or even physical server, which would cost at least 4-5 BTC/month. Paying these amounts would lead me into the loss, so I had no other choice than to close CoinURL at all.
If you had unspent clicks and impressions on the CoinURL I can transfer your ads to the other ad places I have. In this case just write your CoinURL username and password to the
[email protected]. I will do this manually, so don't abuse it with negligible small amounts.
CoinURL domains "coinurl.com" and "cur.lv" are for sale! Short links will continue to work at least before February 1, 2013.