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moreoever, they could launch 5 startups at the domain cost of one.

May be. And AppSumo which is similar to Startups.com is doing a great Job and they are doing it correct.

Meant to upvote you, sorry.

I don't have a downvote button, so I'm guessing you aren't able to undo a downvote?

No, you're not.

No, and they are frustratingly close together too. I've down voted a number of people by accident due to my fat fingers...

I accidentally downvote on Reddit all the time on my iPhone, but they let you switch.