I think most of us would recognize all these IOI's when we see them.
The other night I tried gaming this HB and she was throwing IOI's like crazy! I didn't know about the list, but here is a list of IOI's I noticed:
1. Eye contact - unlike anything I've experienced ever before! the way she was looking at me made me horny
2. Laughing - she was laughing at everything I said
3. Trying to get my attention - when I tried talking to somebody else she tried to get my attention
4. Body contact - she was sitting next to me and her leg was touching mine most of the time
5. Mirroring - the most obvious was when I stood up she stood up, when I sat down she did the same
6. I don't know if this is and IOI but she mentioned couple of times that she's single and wants to have fun
7. Again, not sure if this is an IOI but she spent most of the night talking to me, even though we just met and there were many other new people at the party.
There was probably a lot more but I'm not really good at noticing these things. This whole experience made me feel so good about myself, she was the only single girl at the party and there were other single guys, some of them better looking than me, but I managed to keep her undivided attention. Too bad I got too drunk and ruined everything in the end...