If you’re a Google AdWords advertiser, there’s a new advert ‘extension’ which might be of interest. The Promotion Extension shows a really prominent price tag icon beneath your advert, and features either special prices or percentage discounts. Obviously it’s mainly of use for those of you driving people to online stores, and may take a bit of maintenance. But early reports suggest these extensions are very effective, so if you get the chance, give them a go. They’ll probably not be used much in the professional arena for a while, so it’ll give you a big advantage.