I'm in 6.3 right now. Shit I've almost caught up.
Then you'll be just like the rest of us, compulsively hitting F5, waiting for the next update.
...it's been two days since the last update.
I actually only check every few days. Sometimes as infrequently as once a week.
Disadvantages: I don't find things out the instant they happen.
Advantages: I generally get a decent amount of reading in a session, rather than just a single page. A more continuous feel.
My friends all know about my reading habits, so they don't say anything about updates until I say "So, I read the update." I don't browse Tumblr or any of the other sites, so my delayed reading doesn't actually have any repercussions--everything's still new when I get to it.
My other Homestuck idiosyncrasy lies in that I don't actually enjoy speculating about what's going to happen--for me, the fun is in reading things as they occur, without trying to second-guess the author. This, of course, has been known to drive one of my friends absolutely bonkers...as she enjoys speculating all the way to the hilt. She'll go on about how X is totally Y and it will all make sense...and I nod and say "We'll see." Sometimes she's right, sometimes she's not.
Vriska and Calliope are the best characters. For entirely different reasons, but they're both totally the best. Also, Vriska is the sexiest and Calliope is the most adorable.