Without knowing the age of the child, the behavior, and how often it happens it's not possible for anyone on here to offer a solid answer to the questions you ask. One thing parents do need to keep in mind, though, is that very often, what a parent interprets as "attention seeking" is really "legitimate attention needing" in a child.
Personally, I think a parent who thinks his/her child is "an attention seeker", and has the questions asked here, should set aside any preconceived ideas that the child is "just an attention seeker for the sake of it", check into some child-development books/sites, and talk with lots of other people who have experience with children and see what they seem to think.
I'd think one of two things would happen if a parent did the above: 1) Either that parent may come to understand the child's behavior a little better, or 2) that parent would come away feeling as if s/he may have been right to be concerned about the behavior. I'm not saying that "everyone" else will have all the right answers. I am, however, saying that talking to enough people and reading enough in child-development resources can give a parent a better reading on whether the child's behavior is pretty standard or not for his age.
I'm not making any assumptions here. I just know that a whole lot of people think children "just want attention" (for the heck of it), when a whole lot of the time (maybe most) there's a lot more to what a child needs/wants than that.
A place to start might be to write a Hub about the behavior. Another place to start might be the HubPages forums under "family/parenting".