frankiethepet said:
and PARKING is pointless unless you have a REALLY good domain.
Actually, it depend on your expectation

It's certainly possible to get 1000% return if you know how.
I have domain that have...
3 words.
16 letters with two "-".
New registration.
It consistently make $6/month for 8 months.
It may not be much, but, what if you have 1,000 such domains?
These are steps to find such domains.
1. Find high paying keywords.
2. Find high ovt words that match those "high paying keywords".
3. create domains based on above two. It could be...
Word1Word2Word3.com
Word1-Word2Word3.com
Word1Word2-Word3.com
Word1-Word2-Word3.com
Word1Word2Word3s.com
Word1-Word2Word3s.com
Word1Word2-Word3s.com
Word1-Word2-Word3s.com
I even have domain that has 26 letters + one "-".
That domain made $36.09 during past 7 months.
These domains do not get much traffic, but, they do have very high CTR and high RPC.
I am showing these extreme cases to prove that it can be done.
Here is real case tryout

Keyword - student loan consolidation
You need to pay Google $27.46 per click if you are a advertiser according to...
https://adwords.google.com/select/KeywordToolExternal
I am guessing I may get about $1 to $2/click if I park the domain.
There are 3,750,000 google search results pages for "student loan consolidation".
OVT 2384 according to Estibot
91 ads according to Estibot
So...
These keywords are real good candidate to create new domain names.
I created following possible domain names.
studentloanconsolidation
studentloanconsolidations
studentsloanconsolidation
studentsloanconsolidations
studentloansconsolidation
studentloansconsolidations
studentloan-consolidation
studentloan-consolidations
studentsloan-consolidation
studentsloan-consolidations
studentloans-consolidation
studentloans-consolidations
student-loan-consolidation
student-loan-consolidations
students-loan-consolidation
students-loan-consolidations
student-loans-consolidation
student-loans-consolidations
Following domains are available to register.
STUDENTSLOAN-CONSOLIDATIONS.COM
STUDENTLOANS-CONSOLIDATIONS.COM
STUDENTS-LOAN-CONSOLIDATIONS.COM
STUDENTSLOAN-CONSOLIDATIONS.ORG
STUDENTSLOAN-CONSOLIDATION.ORG
STUDENTLOANSCONSOLIDATIONS.ORG
STUDENTLOANS-CONSOLIDATIONS.ORG
STUDENTLOANS-CONSOLIDATION.NET
STUDENTSLOAN-CONSOLIDATIONS.NET
STUDENTSLOAN-CONSOLIDATION.NET
STUDENTLOANS-CONSOLIDATIONS.NET
STUDENTS-LOAN-CONSOLIDATIONS.ORG
STUDENTLOAN-CONSOLIDATIONS.NET
STUDENTSLOANCONSOLIDATIONS.NET
STUDENT-LOANS-CONSOLIDATIONS.ORG
STUDENTS-LOAN-CONSOLIDATIONS.NET
STUDENT-LOANS-CONSOLIDATIONS.NET
STUDENTLOANS-CONSOLIDATION.ORG
I would register top three.
Did you notice only 3 .com is available from 18?
There is NO guarantee these domains will make any money
