Tiered link building helps you rank for competitive keywords without burning...

https://telegra.ph/How-to-Use-Social-Bookmarking-Sites-Without-Spamming-A-Strategic-Guide-04-28

Tiered link building helps you rank for competitive keywords without burning your budget. By focusing your tier 1 efforts on authority and using tier 2 links to support those assets, you build a foundation that lasts