Sure. Questions, too! It's a good idea, though, to try and make your point, or ask questions (I liked this one, though), without a preposition as caboose, whenever possible. Here's what the author of The Grammar and Style Guide and A Reason for Living, Laurent Grenier, wrote on the subject: "Many grammar experts in the past insisted that a sentence should never end with a preposition. In most cases, the rule still holds. Nearly all experts now agree, however, that a preposition may appear at the end of a sentence if moving it to another position would create an awkward construction. Weird: I want an income on which I can count. Better: I want an income I can count on." More from the same author: "Sentences can end with prepositions, despite the oft-heard dogma that they should not, but a sentence that does is likely to be a sentence in which the word order is not standard, because in standard word order a preposition is followed by its object." Listen to how funky, "What are we waiting for?" sounds when it's grammatically correct: "For what are we waiting?" At least I think that's correct, LOL. It's hard to imagine saying that, even if it is "correct." I'm not sure if every rule was made to be broken, but I can think of one or two that shouldn't be used without considering the situation. Sometimes all that's needed is a small preposition-ectomy. Remove, and listen to the result. You might be surprised. I wrote an answer that ended with "..or anything else you already know about." in the dreams category. It sounded right, but clunky, so I tried rephrasing and rearranging, including "...anything else about which you already know." I finally realized "about" was unnecessary - and ended up with the stronger, more direct, "..or anything else you already know." Hope this is helpful. http://www.laurentgrenier.com/grammar&style.html

Many of the silly rules of English grammar come from the even sillier idea that English grammar should be the same as Latin grammar. (All grammarians in merrie olde England studied Latin grammar.) Latin sentences can't possibly end with a preposition, or split an infinitive, so they applied the rule to English. But there is no more reason to apply Latin grammar to English than there is to apply Hebrew, Chinese, or Sanskrit grammar to English. Here's a joke about that stupid rule. This kid's father was an English teacher who'd worked a year in Australia, and he was a real bore on both subjects. When the kid ended a sentence with a preposition, he had to go up to bed early, but his father promised to read him a bedtime story. "But not about Australia!" the kid said. Well, his father brought up a book about the Great Outback (desert). The kid looked at the book and said "What did you bring that book that I didn't want to be read to out of about out back in Down Under up for?" (Sentence ends with 11 prepositions.)

You never end a sentence with a preposition. why? its bad grammer and it makes one sound like a red neck. example: wheres my comb at? pure red neck. People judge you by the english you use. ending a sentenc, with a preposition....IS DEFINITELY NOT WHERE IT IS AT ! see what i mean?

why not ? the answer lies in the question itself. If you are not confused with the prepositions or questions, you can use conveniently. Eg: what are you looking at / for? who are you talking to / with ? What are you listening to ?