One way to deal with too many stickied posts, and I agree that they can get irksome if there are too many, is to make them disappear via clicking on an x at the upper right corner. For example, the first thread in the list of sex forum threads could read "Sticky Threads" and be open by default when you navigate to the sex forum. Then, so you don't have to deal with the threads after that, you could just close it, with only "Sticky Threads" remaining as the first thread. It could be again made available with a quick mouseover or by clicking on a "+".
I imagine the ability to do this is possible, as clicking the Links and formatting "i" above where you post allows for a similar mouseover effect, and clicking the x that lists all the subfora collapses them and leaves "Categories." The categories can then be reopened by clicking on the "+" the the left of the word.