Kind of... i was sexually abused by an 11 year old when I was 7 / 8. It may sound very 'innocent' but in fact it was manipulative, he knew I didn't like it, he was terrified of getting caught (so knew it was wrong on some level) AND he did it to at least one other girl that I know of. But because of his age at the time that it happened, some people feel that it does not count as abuse, or that it is 'normal.' I think they're very VERY wrong. Children abusing other children is more common than once thought, I reckon.
My step-father did the 'sexual-emotional' abuse, e.g. sexual comments, offers of looking at pornography, sexually explicit discussions etc but was too drunk to take it any further physically, apart from once, mildly.
My mother did the emotional / psychological abuse. My mother feels that my stepfather's actions were entirely innocent and that I should have been 'flattered' by his comments etc, but at the same time says she did her best to make sure he wasn't left alone with me!!! This has farked me up beyond belief. I refuse to have anything to do with them now.
Yes I think it's very common
I also feel that I can tell when other people have been through similar experiences
However if you feel some things are 'ambiguous' then you just have to go with your gut reaction.