I just wanted to post what I had said in the original discussion:
If you genuinly want to understand the Eastern perspective, you have get out of the Western mindset of the division of sins. I could go more indepth about this, but it is a side topic.
Compare it to this. I hear the debate come up on this forum (I have actually floated around here since 2004) quite frequently - can a confessor require a murder to turn himself in as penance? Answer: no, but if he is truly repentant he should turn himself in on his own.
Now take that and apply it to this discussion. In the Eastern perspective, there are three ways to receive forgiveness of sins (annointing of the sick - we all receive it at least once a year because we also give it for spiritual sickness, not just physical-, confession and Eucharist). All three offer the ability to forgive sins and heal the person. Only confession, however, offers you the ability to discuss these shortcomings with a confessor who can offer advice, guidance, a spiritual regiment to help you improve, and support. If there is something that is severely hampering your path to God, what one might say is a serious sin (but keep in mind in the East this could potentially be different for everyone depending on their personal spiritual place - ie what consitutes serious may very from a monk on Mt Athos to a recent convert), then for true repentance, you should see your spiritual father (confessor) for guidance to ensure you can overcome the shortcomings and prepare for the Eucharist. It is the same double sword as above. You have to be truly repentant, and to be truly repentant you must experience metanoia (a desire to change), and to express that desire to change you need to see and discuss the matter with a confessor.
On a side note, Eastern Christian culture places a very heavy emphasis on people developing close relationships with spiritual fathers and mothers who know there personal circumstances and can advise them on an intimate level. Confession is expected to be done on a very regular basis, often weekly, regardless of sins committed. Everyone needs guidance. Of course, many EO and EC have allowed this practice to fall wayside in the face of secularism the way the Western churches are troubled as well.