Tonearm - 10:13 am on Jun 22, 2012 (gmt 0)

I was going over my AdWords campaign settings and noticed 3 settings I didn't like so I opted out of them:

1. Include search partners
(I don't think I've ever seen an AdWords conversion with a non-google.com referrer.)

2. People in, searching for, or viewing pages about my targeted location
(I want my ads to appear in the US only.)

3. Include plurals, misspellings, and other close variants

Is it standard practice to opt out of these 3?