I have started to build some backlinks for my new sites, and was wondering if I'm not over-doing it and risk getting sandboxed. The domains are brand new with unique content of course , and I'm building for each domain 10backlinks from pr3-pr5 ******** blog commenting per day (5days/week) - Should I keep building them or slow down or 10 per day is fine and I don't risk getting sandboxed? Also I have a question about OBL score, I'm posting on pages where it's in 80-100range - Is it too much or not? I know the less the better but can it hurt my rankings if I do with 80-100range? Thanks!