I used both yell and thom, but find I get clusters of calls, maily domestic cleaning, but have had 2 commercials a one off big clean and a contract job, did try the web, but got I enquiry in a year, my vehicle signs work best for me, (but some little brat knicked them over christmas and the phone's have been dead, magnetic signs, had them for 2.5 years). Word of mouth does work well commercialy and so does direct marketing in my opinon.
Petra