ASF isn't just a place to discuss the stockmarket and world events, its also a place of learning. As administrator I am unfortunately exposed on a daily basis to the regrettable spelling and grammar of some of ASF's posters. This thread is my attempt to improve people's literacy levels and consequently improve the level of posting on ASF. Take pride not just in what you say, but how you say it.
Numbercruncher, pay attention to this lesson in particular.
LESSON 1: Their, There and They're
Their is a possessive pronoun. It always describes a noun.
Note the spelling of their. It comes from the word they, so the 'e' comes before the 'i'.
There is an adverb meaning "that location." It is sometimes used with the verb to be as an idiom. It is spelled like here which means "this location."
They're is a contraction of they are. Note the spelling: The 'a' from are is replaced by an apostrophe.
Examples: Their dog has fleas. (possessive of they)
I put the collar right there. (that location)
There are five prime numbers less than ten.
(with to be)
They're 1, 2, 3, 5, and 7. (contraction of they are)
Practice here: http://www.better-english.com/easier/theyre.htm
Next lesson soon.