WP advertising and SEO Location

Hello,

I have a couple of live wordpress sites and I just wanted to check out 2 things....

1. I read at somestage that wordpress can advertise sporadically on sites, is this true and if so, how can I prevent this?

2. I am located in Ireland and I have installed Google Anayltics, the ones that are .com show up to be in Africa on the map review of google anayltics how can I suggest that they are Irish sites as this would be good for SEO.

Many Thanks,
Eileen