First of all, it is worth mentioning that most general directories are not worth bothering with. Please don’t be taken in by SEO companies who promise submissions to thousands of directories and sites to build you links. First of all, most of the directories they will find will probably not be in your area of industry and secondly they are usually sites which have no value to visitors or search engines. Therefore, your time is wasted here.
One thing we like to do is go through a simple and quick process for industrial directory submissions and then leave it well alone. If you find a few in your niche then great, but don’t spend an age submitting your site to loads of directories – I am sure you can spend your time on more profitable tasks. But if you’d like to get listed on several sites within your industry sector, here is one way to find them. Just type in “add url” + “engineering directory” into google and you’ll see results for all sites that accept your url in an engineering classification. You can alter the search to be more specific and exchange the “add url” part to “add link” or “add websites” you can then look through the results to find the best directories. Of course, you would use relevant keywords and phrases for your niche or industry type, so if you were in the scientific industry (let’s say in chromatography) you would type in “add url” + “chromatography directory”
Just make sure that you don’t spend a huge amount of time on this. If you find a few directories in your niche with just a few other links on the page then why not add your link to them. Remember, adding your link to a page with hundreds of other links is going to dilute any page rank value to your site. Getting on a page with one or two other links is ideal. Also do a page rank check in the google toolbar to see the rank of that page. This will tell you how important this page is (in the eye’s of google anyway) and the higher the rank, the better it is. Again, don’t be totally ruled by this ‘page rank’ business, either for directories or for getting links from other sites. Just because a site page shows a page rank of 2 does not mean it is of less value than one with a page rank of 5.
This depends very much on how many links are on the page and also how relevant that directory or website is to your particular niche. So, a directory in your marketplace with a page rank of 2 or 3 is probably better than one in a general directory with a page rank of 5 or 6. Don’t be taken in by companies offering you links on sites, as most of them are useless and crammed full of other links.
Finally, there are one or two directories to consider if you want to improve your rankings a bit. The first one is the yahoo directory (currently $299 per year) and then there is dmoz which is a free directory from google. Both are worth getting into but don’t get obsessed with getting into either. The dmoz directory can be difficult to get into because it is run by humans (and quite rightly so) but this can mean huge waiting times for approving entries. The yahoo directory is a nice to have option but you might find that a $299 press release service through PR web or PR newswire will be a better use of your time and money.