That is very useful, my only complaint would be lack of extensions but I'm expecting you may add them in the future. As I like to check .co.uk, .tv, .fm and .mobi. All of them are in their own rights pretty popular domains. Maybe what you could do is allow people to select which they wish to search for limiting it to 3 at a time. That means there won't be loads of activity but they still get the choice.
Yeah, I am trying to figure out how to expand and if it would really be worth it. I have several other projects I'm trying to balance, and this was really just a quick project to get going.
If it starts attracting some more traffic, I will certainly give it tighter design and add in a bunch more features I have written down (including incorporating more/all TLDs).
I really appreciate your suggestions though, so I know what to focus on most for the update.
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