Just got the same question: i've got iMac with core i3 and MBP with core i7, is there any point to mine? I believe i need to mine currency on CPU, as GPUs are not powerful as CPU..And is it possible to mine using both of Macs via Wi-Fi??

Is there any point? I guess it depends on what you're expecting to get out of it. If your goal is to learn about the process of mining and crypto-currencies in general, then sure, try it out. If you're expecting a profit, there really is no point to mine with that hardware - especially if you want to mine BTC.