In my mind, what you need to be going for is "general". Okay, I restore log homes. What bbs is there for me? But if I have a tough, on the job question, I go to one of the "Wood" boards where that is the Dominator. It would be TGS for general or deck related questions, Deckguide for a very specific question, then I'd email a few people and tell them to go answer my question
But I'm not gonna get good advertising advice on Deckguide. Probably won't find good advice for running 10 jobs with subs.
TGS is quite broad, and has decent "nuts and bolts" info, and decent biz info from specific people. Lots of newbies and usual questions. Tightly moderated.
You are (I assume) wanting to include ALL cleaning trades in this board. Seems to me, you've tapped some sources for pwashing, but now you need to pull windows, carpet, janitorial, auto, etc.
The ONLY way I think you'll be successful in this approach is by keeping the "mass appeal threads" going, i.e. marketing, running biz, dealing with customers, employees, etc, and getting the people from all walks involved in them. I'm never going to read a thread about cleaning vomit out of carpet, but I'll read (and respond) to what the carpet guys says about how he manages his 10 crews of cleaners. That info is somewhat universal to a service biz.
That is how I think you need to pursue growth---through these 'mass appeal' threads (for instance, the one about "subs"). For now, I don't think you'll get a lot of serious 'nut and bolt' info going until the site has developed/matured a bit. Normal. But the "mass appeal" is ready to blow....I'm chomping at the bit to talk marketing/managment with carpetcleaners, janitors, etc.
Either way, site is great. You moderate well without slapping bottoms, you start/prolong good posts, you've got a MASSIVELY good prototype to follow (contractortalk), so I think this site will be great.