On the home page of my site I use JQuery's ajax function to pull down a list of recent activity of users.
The recent activity is displayed on the page, and each line of the recent activity includes a link to the user profile of the user who did the activity.
Will Google actually make the ajax call to pull down this info and use it in calculating page relevancy / link juice flow?
I'm hoping that it does not because the user profile pages are not very Google index worthy, and I don't want all those links to the User profile pages diluting my home page's link juice flow away from other more important links.
No, it will not crawl AJAX content by default.
http://code.google.com/web/ajaxcrawling/ has instructions on how to make AJAX content crawlable, but those are explicit steps you need to take, it isn't automatic