Conducting keyword research can offer you much more than you think. Since the search engines are simply readers your keywords can offer you a very competitive advantage for all future marketing material you distribute into the search results.
Here are some recent questions I have received through this blog regarding keyword research:
How can I strengthen my PPC campaign with these new keywords?
If your pay per click campaign is not running on all 12 cylinders taking your newly found keyword research and really utilizing the keywords that have some search volume can yield nice results. Have your ads appear for keywords that actually generate search volume and they could convert very nicely.
How can I help my press release writing?
Press releases are great but press releases with actual keywords utilized strategically are even better. You can take your keywords and sprinkle them throughout your title and also the first paragraph of your website. These are the two most important areas for keyword insertion when it comes to press release writing.

How can I utilize keywords in my business profiles?
Business profiles are a bit different but you can still perform keyword insertion efforts. If you can fit it into the title of your business profile tasteful than great, otherwise make sure to always have a nicely written business description that uses some of your keywords.
Can I use them for blog posts?
Absolutely! Targeting keywords for blog posts is an amazing way to really increase the power of your blog. Use them tastefully throughout your writing and you will see a nice increase in traffic over time.
Keywords (and content of course!) are the foundation for everything you do online. Whenever you are writing anything online you are going to want to utilize keywords in some sort of way. Depending on which keywords you target will determine what type of traffic comes into your website. Often times two keyword phrases that look similar can bring in vastly different website visitors. Things like “solutions” or “services” can attract two very different types of website traffic.