I'm sure everyone one of us has ended a sentence with a preposition at some point or another within your lifetime. I try to be very conscious of this whenever I am doing any sort of formal paper; however, it is much more difficult to keep track of whenever I am just casually writing. While there are many arguments for and against ending a sentence with a preposition, I think Grammar Girl has the best resource on the issue:
http://grammar.quickanddirtytips.com/ending-prepositions.aspx
Check it out!
