Business promotion on HoL in return for giving back to the community

I've just updated HoL's business promotion policy with what's become an emerging practice over the past few months.

I'm keen to help local businesses, but no one wants a site that's chock full of ads. So I want to make sure that where people are making a living from what they advertise, they're prepared to make a return to the community. This can be by donating money to help keep the site running - ANYONE CAN DO THAT OF COURSE :o) - or by giving back to the community in another way. Here's an extract from the full policy:

If you want to promote your business, by advertising, or running a feature, you're most welcome. This can be done either by paid advertising (which is used to run the site) or by giving your services or expertise to the community.

So far we've been doing this by suggesting that advertisers offer a free prize draw to members. We've had a free yoga course, free art class, free wine tasting course, a free Xmas tree and so on.

But if you've got special skills, why not bank those hours for the community? You might be a plumber who could offer your help to people in our Neighbourhoods Connect project, or an accountant who can help out a local voluntary group. You suggest it. If it helps out the community we're interested.