I have completed 2 transactions with xjd1987 and they went well.  He did not scam.

Here is the trade thread:
https://bitcointalk.org/index.php?topic=181582.msg1895816#msg1895816

DanJaker and BlackHawk37 (and I think even more accounts) is the same person.  Look at their posting history, the writing styles are exact.  Using "....." and "-" along with caps often.

Blackhawk37
Profile:
https://bitcointalk.org/index.php?action=profile;u=104105

Show old posts and compare writing styles.  They are the same.
https://bitcointalk.org/index.php?action=profile;u=104105;sa=showPosts


DanJaker
Profile:
https://bitcointalk.org/index.php?action=profile;u=103646

Posting history:
https://bitcointalk.org/index.php?action=profile;u=103646;sa=showPosts

Also posted numerous times in a FeatherCoin giveaway with different FC addresses.



More information on the multiple FC, LTC, and BTC addresses the user (DanJaker/BlackHawk37) is using:
https://bitcointalk.org/index.php?topic=182703.0
https://bitcointalk.org/index.php?topic=184267.0


Mods please look into the user DanJaker/BlackHawk37 and see if there are more accounts connected to the IP or IP range.