Many companies monitor their competitions advertising

Are You Posting Too Much?
By: Webmaster

Many companies monitor their competitions advertising, fliers and websites and if you are posting certain things on your site - you just may be showing all your cards.

What NOT to post on your companies website:
*Detailed employment opportunities - This exposes your immediate weaknesses and can tip off a large move by your company. For example if you are getting into to publishing and start looking for press operators - it will be very apparent you are going to start printing to your competition.

*Details about employee benefits - This can show how desperate you need an employ or how large your company has gotten.

*Marketing or Sales Literature - If it can be downloaded anonymously and is readily available, it could be used by your competition to set prices
or beat your price. So if you are in a business where you couldn't afford
to wage a price war - don't let your competition know all these details.

*Product Specifics - If your product is very unique, giving too much detail would allow your competition to produce or find the same product.

*Other - If you provide information on partners, suppliers or licensing
you may open yourself up to direct or new competition.

Getting Employees:
If you are looking for online job seekers, go to a place like monster.com
or any of the major job search engines and sign up for their services.

Post your ads on other sites and in print magazines without naming your company.

You can learn more about "Competitive Intelligence" by going here:
http://www.scip.org

In Conclusion
Just give some basic thought "Would this give my competitors something useful? (to better compete against me?)" before posting anything beyond what your customers are looking to find.
Of course don't post anything that you yourself would like to know about your competitor.