As I mentioned before on Search Engine Land, Google's bidding algorithm works differently in Shopping than in text advertising. In Shopping, there appears to be a minimum bid to qualify for the auction, followed by a point where traffic ramps up quickly for small bid increases, and finally a plateau where bid increases will only have a minor impact on traffic volume. We have nicknamed this phenomenon “the S curve”. As a general rule, if you raise the bid and the conversion rate drops while the sales stay the same, your bid is too high.
A decrease in CTR or a large difference between the bid and the average CPC can also indicate that low-relevance searches are being identified as relevant and you should lower your bids. Manually managing all of these bid changes isn't complicated, but it is jewelry retouching service time consuming (and endless). But today's auction management algorithms and tools will automatically push your account performance to the optimum with very little manual input. Stream title optimization Your product titles are one of the most important factors in determining whether or not
Google thinks your ad is relevant to the user's search query. Not only that, but a good product title will get more buyers to click on your product. Previous experiments have shown that product titles have a major influence on performance, while other areas – like product description or Google product category – have little or no influence. Again, I covered this topic in more detail in a previous article. But essentially, feed title optimization involves adding popular search terms to your product titles.