Angela does a super job providing everyone with a way to actually rank their content with Google but you also need to do those links a favour for them to work.

You're also doing the sites you backlink from a favour with tip number 1.

Tip 1.

Give backlinks to the sites you are backlinking from. Maybe you could do all the links, then use 2 or 3 of the places to give backlinks to all the sites you already have backlinks on (also doing those sites a favour passing some PR their way). Remember to be consistent with this and also not to mess around with recripocal links.

Tip 2.

Take part in the community.

Why?

You need to give your links some activity, if they are sitting away in the back on some profile, they aren't going to get picked up easily. Take part in the community and let the GoogleBot spot your links.

I've also found that Anjela's links are not blackhat if you use them wisely.

Have fun.