Thank you humble_pie. I replied you earlier but still doesn't appear, I started to wonder if I clicked the 'proceed' button, so let me try the quick reply thing.
I logged into my CRA account, it says my 2012 TFSA contribution room on Jan 1, 2012 is $14,700. (I didn't contribute anything until 2011.) Currently I have $8,500 (sorry I gave the wrong amount earlier), and I'm still continuously contributing $350 on the 15th and 31th of every month, so from now to Dec 2012, I have $350 * 15 = $5,250 that goes to this account this year. With the $8,500, I will have $13,750 at the end of the year.
By putting the $2,500 into TFSA, would that exceed my contribution room? Of course I can cut down monthly contribution, but where would I put my monthly saving to?
There are so many I need to learn, this is a great forum! I'm glad I came across to this forum! Thank you again!