Even if you're getting 1BB/100 in NL, you're doing better than 60%+ of onlien poker players. However, you should be looking at maybe 10BB/100+ before you can say you've cracked the level. I'm on 9BB/100 right now, having had 1,000+hand runs where my BB/100 has been 46 on on occasion and -50 () on another, and I don't feel I'm ready for $50NL yet.