It seems to me that there are still a number of individuals who do not know exactly how to determine whether a page has dofollow links or not--and that person I mentioned is a perfect example). So, for the purpose of sharing my knowledge about the topic, I have it discussed here.
Before we discuss further on determining whether the page is dofollow or not, let me explain first the essence of dofollow links.
When you have a link on a certain page ( an inbound link or a link that points to your own site) that is designed to accommodate dofollow links, that page contributes for your site reputation in the eyes of search engines. In other words, you will benefit also when search engines find your page linked to other site which is considered to be reputable. That page gives value to your page through the dofollow link you have.
So, how to determine if a page has do follow links or not?
To determine do follow links is quite simple. All you need to know is to scan through the source code of the page you are trying to check ( right click on the page and then go to 'page source') Alternatively, you can also find the source code on the 'view' menu. If you find 'nofollow' then, it's obvious that page is programmed to be have 'no follow' links. That means, that page does not contribute for your site reputation whenever a certain reader of that page clicks the link pointing to your site.
Now, you might be asking now if there is other way to check it because it is quite time consuming to check if the page has multiple links. Yes there is.
The idea I discussed above is ideally applicable on pages having just a number of links. But, if you are to check multiple links ( let us say, what if the page has 30 links and you need to check all of them?). There is a better way to check multiple links (quick and easy) and that is by using the Firefox 'NoDoFollow' plugin. So, check your Firefox browser if the plugin is already installed. If not, you can download it ( easy, free).
All you need to do during checking using this tool is to go to the page you want to check , right-click on it and enable the 'NoDoFollow' option. When done, links on pages are higlighted by two possible color which determine whether the links are dofollow or not ( highlighted in blue are dofollow links; nofollow, otherwise).
Now that I have discussed this topic, I hope it can help most especially those who are just new in link building/link trading.
And, If I received an email again asking the same question, I think I won't be having a hard time explaining again and again—they will just be redirected to this post.--Roy Van