I dont like the one in the first post at all. Its far too in your face and distracting to the post your reading. It would actually drive me to using an ad block
The one after the 5th post is annoying, but over time I'd come to get used to it, though would probably scroll past without blinking.
At the bottom doesn't worry me, as I'm used to one at the bottom below 'post quick reply' now (and thats the only one I notice, even sometimes read now).
I personally find the ads work better on me outside the thread, eg at the top and bottom, as my eyes will wander to them before/after I've read the posts. One within the posts would be completely ignored, probably even hated, as its distracting me from what I'm trying to do.
"All are lunatics, but he who can analyze his delusions is called a philosopher." - Ambrose Bierce
Langeveldt: I of course blame their parents.. and unchecked immigration!
GingerFurball: He's Austrian, they tend to produce the odd ****ed up individual
Burgey: Be careful dealing with neighbours whose cars don't have wheels but whose houses do.
Uppercut: Maybe I just need better strippers