Not considering the market capitalization of a market behind a domain. A domain like dentalfloss,com will not generally make you much money (at least in parking) even though it is a category killer generic. Whereas, a domain like FastLoans,com would make you a ton of cash because of the size and profit of the product. That was a rookie mistake I made years ago......I made/make money on those domains, I just did not hit home runs. Your selection of verticals makes all the difference.
Chasing mediocre domains on occasion.....not trash or other extensions, but just ho-hum generic .coms. The bad economy shows which ones of are duds. Something that is marginally profitable in good times is most often not going to be profitable in bad times......unless you are speaking "down economy" domains like alchohol, gold, sex, foreclosure, guns, etc........ It's feels good to shuck some of those now the economy points out weaknesses in my portfolio. Lesson learned. My portfolio is feeling tighter now.
Have at least $5,000 ready for a UDRP at all times....EVEN if your portfolio is full of painfully generic domains. I have the money, but I was surprised to be UDRP'd for a domain that I have owned for over a decade and is very generic. I did not think it would happen to me, seeing as how I only register generic domains. The domain in question by my estimation is worth at least $200,000 to $400,000 in value. A UDRP will cost, if the complainant actually uses a trademark attorney, anywhere from $2,000 to $4,000 range and $1000+ depending on panel choices.....the same will be true for you if you are brought up on a UDRP and you don't wish to represent yourself. A roughly $5,000 bill for the complainant to STEAL your domain worth ten times or more than the complaint is a no-brainer for a thief. So, my point is I made a mistake assuming I would not be UDRPd. If you don't have the money ready for a UDRP, especially for your best generics, then you are making a mistake also. Just like in the ol' ranch days of a rancher's cowboys hustling land owners to leave their land by any means....the modern land hustlers have arrived for your .coms. Wrong or right does not play into this....it's a mere $5,000 roll of the dice for them to steal your gems.
