I for one would be proud to be listed as a certified installer however it depends on how much cash is involved. I dont have a problem with making a donation when I can but the reality is that landing a network install in my area isnt that easy and doesnt happen that often. Its a seaside town and there are few of old fashioned companies that think that I.T. is a necessary evil and the £700 they spent on a new server 4 years ago will see them for the next 4 years. I would say I have about a dozen clients using some version of SME and I have made several donations in lieu of that.
Server hardware has gotten alot more reliable, and SME is pretty damn reliable, its hard job convince people of the good resons for upgrading when what they have still works.
I think part of what makes FOSS attractive to charities and small companies is also what makes it less visible as a 'commmerical solution' however SME could benefit from a more proactive commercial approach.
What I am doing recently is contacting all those that I have installed SME for and raising awareness that there is a new version available and that there are benefits to upgrading and donating.