Acceptance Rates and Impact Factors

For those of you who do publish at computer science conferences*:

1) On your CV/Biosketch/Website/etc. list-of-publications, do you include conference acceptance rates?

2) If you do, what  is the threshold for you to mention it? (e.g., 50%, 30%, 10% ?)

For those of you who don't publish at computer science conferences:

0) Hey, why aren't you publishing at CS conferences? We're cool people, and we start counting at zero.  

1) On your CV/Biosketch/Website/etc. list-of-publications, do you include journal impact factors?

2) If you do, what is the threshold for you to mention it? (e.g., do you list IFs for startup journals)?

And for anyone willing to share their field / subfield, I'd be interested to hear that as well. I'm planning to assemble this information into a longer post on the topic in a few weeks.

---
* This includes anything which has archival proceedings, like some workshops, symposia, summer/winter/fall/spring schools, etc.