To get good reward from Backlinks.com, it need high Domain Authority.
One of quick method to increase a little of DA is to use traffic exchange service.
I use EasyHits4U which give 0.3 USD per viewing 1000 webpage, it also give 1:1 traffic exchange at the same time.
I use the credit earn from EasyHits4U to gain traffic to my website for two days,
Site A: 18 -> 23
Site B: 11 – > 14
Site C : 14 -> 18
This helps to increase income by 50%.
That is not big money but if you sold lots of links, it is a very good source of income too.
EasyHits4U may not further gain DA for your website.
If you need to increase much more, building of links is needed.