One address, read by a person, no ticket system:
[email protected]usefulHQ is a small independent operation, so a reply can take a few days. Corrections get looked at first.
This is genuinely the most useful thing you can send us. Prices move, retailers change specifications, and a figure that was right last month can quietly stop being right. If a number on any page looks wrong, tell us which page and what you think it should be, and we will check it against the source and fix it. Where an error changed a conclusion, we say what changed rather than quietly editing it.
The useful version of this is a purchase you found hard to compare, and the number that would have settled it. Cost per terabyte, cost per printed page, premium over spot: every comparison here started as someone wanting one number instead of a spreadsheet. If the thing you want compared has a number like that, say what it is.
Happy to hear from retailers, manufacturers and journalists. Two things worth stating plainly before you ask: placement in a table is not for sale, and no ranking is adjusted for whether we earn a commission on a product. Tables are sorted by the metric and that is the only thing that moves a product up them. You can read how we work that out, including how the site makes money.
If you want to cite a figure or a chart from the site, go ahead, a link back is all we ask.
Messages go straight to the same inbox as the address above. We do not store them on this site, and we will not add you to anything.