Sorry Chip ... but one of the difficult concepts that IS/IT people have is understanding the difference between solution, market and customer. So I'm going to have to jump on your use of the word niche.
Think of it as three layers:
micro-market = problem being solved
niche = customer being served
solution = how you are going to solve problems
In IS/IT we often mix up the three. It's one of the reasons we have so many problems trying to sell our solutions ... and yet when we get it right we tend to have explosive sales.
You can think of it as a three dimensional matrix (e.g. a Rubiks cube without the ability to move). Your job is to reach the specific block that will give you the best results. From the top you are seeing all the customers you could choose. From one side you are seeing all the problems you could solve. From the remaining direction you are seeing all the ways to solve problems.
Your job is to identify the specific customer you are going to deal with (the niche). This allows you to identify how best to connect with them.
Your next job is to identify the problem that you will solve (the market or more properly micro-market). This allows you to state the solution in terms the customer understands.
The third task is to identify the solution you will use. (Which noone really cares about). (I'm going to call this the fad in a moment).
Do all three and you've found the buyer. (Presuming there are enough to justify the effort).
The problem is that in IS/IT we tend to go the other way round and skip pieces. If we actually get all the pieces then we've got a methodology or solution. If we skip we've got a fad (or solution looking for a problem).
There's nothing wrong with jumping on a fad to market our solution. But we need to be sure we have a niche/market/solution combination or we'll just end up making marketing noise.
Glen Ford, PMP
http://www.trainingnow.cahttp://www.learningcreators.com/blog 
