Some searches only result in a few available domain names. There's not much I can do about that other than generate and check more domain names (which I will in the future). It's the nature of whatever you're searching for; commerce (and most other money-related searches) will be saturated.

I don't think that's what the parent is saying. It would seem that domains that you say are available for the .com gTLD actually are not.

Maybe you count as "available", domains for which the .com is taken but other gTLDs are not?

Personally when I search for a domain I'm only interested in .com, but maybe you could let users choose what TLDs they care about?

Gotcha -- I misunderstood.

For complicated reasons, sometimes a registered domain will show up as available. This should only happen in less than 1% of cases and I'm working on reducing it to zero.

Seems to be happening much more than 1% to me, every link I have clicked so far (6 or 7) has resulted in an already registered domain.

Same here, when I searched for "rpg".

As others have stated, it seems to be much more than 1%... and it absolutely must be zero if the service is to have any credibility.

Anyone can make a list of words: that's the trivial part. What you are "selling" (even if for free) is the capability to verify availability fast; you need to deliver on that promise for the whole thing to have any value.

I'd say the value is even negative when registered domains are shown as available, because then it's wasting users' time.

(Sorry to be blunt but I don't know how else to put it).