AVR-Chat

I am a AVR hobbyist and I am currently working on a project to design and program a two wire interface between to Mega AVRs in which one would send instructions to the second directing certain tasks. I have the software side of it well underway but I am having doubts about the hardware part of it. I have determined that I must power each chip from the same power source (in this case a voltage regulator) and that I must connect the two wire busses to a common ground. What I am concerned with is my basic choice to implement this on a breadboard. The busses would be the side rails. I am seeing conflicting opinions about breadboards and their suitability. I would be interested in more views on this from the group. Ultimately I can go with a soldered solution, but I would like to do the prototypes on a breadboard if possible, at least until I get it up and running. I have no EE or EE Computer science training. Thanks,