There is an interesting search functionality in SCN on top right corner of the page that can get you better results. When I did that I have got few good answers, most questions are from newbies of SCN so even the question was answered they haven't marked it as answered, may be because they don't know how to do that. Hope you can get better technical answers there.
Ex.
what is the difference between RFC and Function Module in SAP?
What is difference between BAPI ,RFC and FM
- Midhun VP