Someone called me, so I got distracted. Anyway, about the grammar talk from earlier, I don't know if it's proper now, but when It comes to complex sentence, I see so many people using commas when a dependent clause. Maybe I missed the memo, but I was taught not to do that.
Also, that depends on where the dependent clause is. For instance:
Please go to the store.
This is your independent clause.
When you can.
This is your dependent clause. If you form the sentence thusly:
Please go to the store when you can.
This is where the dependent comes after the independent, so no comma is needed. However, this is what happens when you place the dependent before the independent:
When you can, please go to the store.
At this point, a comma is needed to separate the two.