Question about profile linking ?

[TABLE="width: 247"]
[TR]
[TD]How do you use profile linking to promote your website and on which websites should I do it.
Please give me some examples of the sites I should use and does it work like social networking sites where I need to build my network.
Is it effective SEO practice or just a waste of my time?[/TD]
[/TR]
[/TABLE]

It was worked before, I have used it for my websites a lot. At some point of time, there is no value for those links. You can use it as a tier2 in my opinion.

Agree, profile links are crappy