Great thing about lambdas is that I can define a function inside a function. In most of the cases it is not necessary and C++ does not allow it anyway (without using structures etc.). But sometimes, ability to declare a function inside another function saves a lot of typing (which you can waste later on writing blogs) and increases readability. On the flip side, not many C++ programmers are familiar with lambdas; so a decision should be taken after consulting your team members.
If you are an experienced programmer who have used lambda before then have a look at this. I have heard some nice things about boost-phoenix library too. This library brings functional programming into C++ world.
I’ve used boost-spirit and I’d recommend to stay away from it for two reasons : error message does not make any sense (I am not comfortable with templates) and it takes a lot of time to compile.