I wouldn't advertise on craigslist as it has a very shady history of "crazies" dominating it and I wouldn't like to think what kind of people it would attract. Maybe it isn't so bad in BC but I personally wouldn't even look on a classifieds site for childcare services. I know a lot of providers in Ontario who advertise on Kijiji with success. I have only ever heard a couple of complaints about spammers contacting via their advert. Again, I personally dont advertise there, but that is my personal preference. I think a lot of people advertise on kijiji because it is a high traffic site and there are limited places to advertise.

I advertise om here, have registered with a provincial home daycare online registry. I used to advertise on GoDaycare also but in my 7 years have never had an enquiry via that site. My number one source of advertising which always seems to 9 times out of 10 be a parents source, is a free website. I went to webs.com and made a really simple website for my daycare. Easy as ABC. I also made sure when initially opening my business that the name of my daycare was within the first few letters of the alphabet so when people searched daycare and the results were alphabetical, then my daycare would always appear on the first page. In addition, I listed my business on Google Places/Google + (Its free!) and that has been invaluable.

Other than that, maybe invest in making some posters/flyers with tear offs and post them in schools, early childhood centres, and even leave a stack of business cards with elementary school receptionists. They quite often get called to see if they know of local providers.

That's just a few ideas, good luck!