Ask the person you are going to buy it from and then once it's added to the site, view the source code to check to see how it was put up.
Simply ask the person b4 buying the links are they Do Follow and No follow but most of webmasters sell Do Follow links only
You can use the SearchStatus add-on with Firefox Has many options: Alexa data, Link reports, whois info, robots.txt file, and an option to display the no-follow links in pink.
This website I find handy: http://seopro.com.au/free-seo-tools/link-checker/ Shows anchor text, pr value, no follow tags etc etc Cheers Samantha
right click your link in the website where you bought the link and check the properties. the relation will be shown as 'follow' or 'no follow'. easy to identify the 'follow' or 'no follow' link. or you can use search status.
you can ask from the seller. or go to the source page and find "nofollow".. if you can be able to see then your link is in "Nofollow"... Otherwise OK.....
Add-on the firefox searchstatus, righ click the "@" symbol and select "highlight Nofollow links" when you open the website and your link shown "pink colour", then nofollow, else it is dofollow