More Thoughts on If Will

My recent observations of "if will" sentences collected maily from the Internet led me to be aware of a few more patterns:

1) When 'will' is used by someone else before you:

Bret: Eileen says she doesn't want to receive any more email from you, Joe. She says she will be angry if you send one more email.
Joe: Hmmm, okay, I won't write to her anymore if she'll get mad.

2) When the 'will' and its following part in the 'if will' clause is actually the head clause preceding an implied if clause:

We won't use the detergent if it will harm you (if we use it).

3) When 'will' is used in the if clause, and the head clause is 'It's worth it.'

They say a heated garage will prolong the life of our car, and will increase its performance. It's worth it if it will do all this.

They spend a few weeks on summer break studying high school math. Even though they miss the weeks, they say it's worth it if it will make their high school days manageable.

What do you think? (A few of the examples are taken from websites, and amended (by me) so they can be used as examples here)

Hiro