PR links won't make a blind bit of difference, unless they were relevant you'll probably never see a change. Links on pages relevant to your website will get you a good google ranking even if they don't have good PR.
They were relevant. I bought one on a ringtone site and one on a tech blog and one on a cell phone site.
If you mean the your PR, then it should be somewhere this month... or next. (after the Google Visual PR update). Regarding SERP, it makes no direct mpact. Regarding incoming traffic, you can obtain the info from your hosting account. Hope it helpss
Then you should see some changes in your rankings. Maybe small, because you cannot base on 3 BL's. Check if google index that BL's, and then check rankings on several DC's.
Most probably google will update the PR within this month. so you may see the effect within this month.
Knowing that would imply that someone really knows what Google is up to. Now that you've bought the links, just keep working. Keep watching as well. But don't slack off on your other SEO efforts after buying links, that is just one small part of your overall marketing effort. Richard
Only a select few know that info. It usually updates every 3 months. Atleast what we can see with our toolbars. Google has it updated every couple hours from what I hear.
Google updates PR very frequently (as frequent as daily, i believe), but it is not shown to the public. They only do a Visual PR update once every three months