Re: Gondar Item Build
joebh is the joe BH after all.
Though personally in pubs (which is the only place I play BH), I like maxing WW first, then Shuriken, then Jinada.
Double Backstab + Jinada is often enough to gank someone (especially if you have help, which you should), and less mana-intensive than Shuriken toss. With the low manacost + long duration on WW and by buying a RoB, you can maintain permanent invisibility, which is helpful cos it keeps the enemies guessing where you are and if they become too cautious, they lose some of their farming efficiency.
and as you know, pubs rarely buy Sentries or Dust so you don't get countered that badly.
OT: item-wise, I normally buy
1) Shadow Urn (STR for HP, Mana for spamming, + since u r ganking, the charges are gonna pile up and are helpful for healing between ganks).
2) Power Tread (I like the fact that you can start out with INT for mana, STR when you need to tank a bit, then AGI in late-game)
3)SnY (Deso is also a good orb, but I prefer the HP, Agi and mspd that SnY gives, which is helpful when chasing and surviving counter-ganks)
and for luxuries...
4) MKB (my favorite DPS item in the game)
You can replace Power Tread for Phaseboots too... just remember that you can't Crit or Bash while Phased. And if you still have gold, buy a Vlad (support/lifesteal) or Basher (combined with MKB's mini-bash, it's the closest you can get to perma-bash).