I have mixed feelings about this, but my gut reaction is that it's not acceptable. Mainly because inexperienced programmers tend to cobble together functional apps by leaning heavily on example code, and don't know that those examples have dangerous security issues.
I worked with someone on a Lisp project that monitors the bitcoin blockchain for new transactions, coins sent and confirmations. It could be converted into a type of address monitoring service for multiple blockchains - just needs work, but it's a solid piece of software.
I paid and worked on its development a few months ago, and have since stopped paying for hosting. But it's all there ready to go. I wasn't into altcoins at that point, but I can see a future in it now. It was called donebit.
Gox is a follower in the BTC market now that it takes forever to get USD out. BTC-e looks like its traders move the market and Gox just follows, especially at times of high volume.
Dogecoin already has Dogeapi.com and similar. And since DOGE is a fork of Litecoin, it should be trivial to use this code with DOGE if the authors wanted to.