Hi! I have bought some codes that expire very soon, to buy some domains, so I must choose 6-7 domains this sunday. I have plenty of ideas for domain names not niche related, but I'd like to buy 3 or 4 that could be good for an autoblog or an ebay store. Could you please give me some tips on how to do this research?. I KNOW that picking good niche domains is hard, almost an art, and I will try to learn good techniques, but right now I'd like to at least learn of a few websites or free tools (or tools shared here) that could help me with this. Probably I won't pick the best domains, I don't evend know much about the 'science' behind long-tail keyword domains, but I wanna try to pick the best. Thank you!