Part of todays SEO practice is adding links to your web site or blog as it is well known that more quality links that you have on your web pages, the more likely Google and other powerful search engines are to rank you highly in their search engine pages.
If your site or blog is going well you may find yourself being confronted with a number of requests for links. Your challenge then as a search engine optimist is to find content that relates to your own. This is very important as Google will boost you even higher if you are linking to relevant information that integrates nicely with your own site. Therefore avoid selling hoodia, no matter how attractive the offer looks, if your blog or website is about selling winter tires.
Another thing you should check out before you agree to a link exchange request with anyone is how often the site is indexed. To do this all you need to do is see when the last time the site was cached in Google. This is also a good way of making sure you are not linking to a dead site. People who ask for link requests often fiddle with their link counters to make it look like they have more visitors then they do!
Yet another...