this BacklinksBuilt.com is SCAM SITE.
at jan 5, i saw their ads at google adsense, wow..the promo said buy 1k get 1k backlink for free and prosess only 1-7 day.
its $9,99 soo hehehe..i was thought oh wow..thats cheap..im buying it just to try luck :2sm
even tho i know many other site like this is just scam. i have quite alot dispute experience on paypal with such of scammer like this in past. 
(dont blame me..i was curious to try :p)
yesteday i sent them email, but no respond. so today i dispute on paypal.
well this not about that $9,99 but paypal need to know this merchant is SCAMMer :funnyup
of course i want my money back :p
ALL SITE SUCH THEM ALL SCAMMER..DONT BUY. i have enough to try eheheh..im done. no no. not anymore hehehehe (peace)
Yes they are a scam, i found another article proving the same at http://www.7clouds.info/2011/01/search-engines/backlinksbuilt-com-review-dont-buy-from-them/