@Frank Apisa,
On the ads, I rarely see them, but sometimes words in a post show up in green and if you are holding your cursor down as you go over them, they'll show up as ads.
On things disappearing, Frank, I don't remember if you know about some threads having to be bumped to turn a page, and you won't see your post until you or someone else posts. Sometimes that takes more than one 'bump'.