The script would also have to be able to note when quote tags are being entered and then it can ignore or go to the script and change the amount being given for the content in that tag until given. The same would have to be done with Code boxes. It'd have to be able to add and subtract credits based on what's being done really with BBCodes. If that can be done as well then you are good to go. I would think though that a box after you make the post will do. Or have it send a PM and have the modification be able to be turned on or off.

This is a great idea. I have post a lot of times thinking that i was going to get more (or less) credits so this would be a good way to measure which kind of posts you need to get credits being useful to the community.

I see that there are some difficulties. My suggestion is to put in in the previsualization. When you preview your post it shows the number of credits you would earn. Then you can improve it or leave it that way. It would be cool and this way there won´t be no need to refresh the number constantly while you write.