Should we ask for reviews on Google or ProductReview.com.au?
For SEO and customer acquisition, which is the better platform to grow reviews on?
I'd say it depends on the industry @Hatty Bell .... But I typically recommend asking clients to leave reviews on more than just Google.
If you're in an industry where consumers are turning to Google first to research, then absolutely Google reviews are going to be crucial. Particularly if you are a local business and your users are performing searches with local intent where the local pack (map and results) is triggered.
But you should always consider other potential user journeys.
I always recommend businesses perform client's likely searches in Google and understand which 3rd party review sites are prominent and make sure you are building reviews on those platforms. For example, if you're looking for real estate agents then you'll see that ratemyagent and others rank well. For others, it could be TrueLocal or YellowPages or ProductReview. If the consumer is going to any of these sites directly, then they hold special importance.
Typically each business should have up to 3 or 4 sites where they want to generate reviews. I'd be looking at the most influential site/platform, understand how you compare in the eyes of the consumer to your competitors and if you're lacking, then focus on building reviews there first. Then move to the secondary sites/platforms until you are competitive on each of them and then you can start to ask for reviews on any of them to keep them ticking along.
Reviews on Google are one of the most important ranking factors for SEO. And, when a person scans the search results for a product or service in Google, the business listings that include customer reviews present greater credibility and, naturally, receive more clicks.
It doesn't hurt to have reviews on Google AND ProductReview.com.au but having more reviews on just one platform increases the trust of potential customers.