It is interesting that Yahoo and MSN allow RSS subscriptions to a search. By subscribing to a search can save you a lot of time and help facilitate any research that you are doing.
Google only allows subscriptions to a Blog Search, but not a Web Search. A good substitute for this is a Google Alert which will keep you up to date on any topic across Websites, Blogs and News.
It is easy to get tunnel vision when working. One thing to remember is there is a lot going on out there beyond your Niche and it is beneficial to be proactive.
Years ago I worked in retail as a district manager. We had stores in malls and I had a simple rule for employees. Park at the opposite entrance of the mall. Why?
Awareness. Walking through the mall on the way to the store was a great way to see what was going on in other stores and the mall itself. I saw a lot of good and creative ideas come from this practice.
This rule applies to the Internet. If you are trying to have a successful site on the Internet you need to be aware of what else is going on around you and your visitors. It helps to know a little about what others are doing in your market, and it is also beneficial to look beyond your niche. The easiest way to do this is with RSS Subscriptions, Newsletters and Email Alerts. I have sites in several niches, and I subscribe and monitor blogs and people way beyond those niches. Some of the best information I see is where I would have least expected it.
Subscribe to blogs outside your niche and you might be surprised what kind of ideas you can pick up.