It's anniversary week apparently, as several webcomics hit some notable publishing milestones over the past seven days! Here's who's celebrating...

5. Sandra & Woo: 500 Strips!

Oliver Knörzer is working on two strips these days, and this one of the just hit the 500 mark! To celebrate, he's created an elaborate cryptogram which he likens to the as-yet-indecipherable Voynich manuscript. He does say that his code probably can actually be cracked, but he also promises that itwill not be easy!

4. A Softer World: 999 Strips!

OK, 999 isn't exactly a round, celebratory number but it's as near as. Plus, the next guy on the list is at 1000, so let's try to differentiate a bit! The series uses photos as their basis for art, captioning the imagery in three consistent panels. There's no continuity, but they frequently speak to current and significant events if you're willing to pay attention.

3. A Girl and Her Fed: 1000 Strips!

I'll have to admit up-front that this particular installment isn't that riveting installment, but one thousand strips is quite an achievement. But as far as sort-of-an-X-Files-thing-but-with-real-ghosts-and-the-main-characters-aren't-named webcomic page, Monday's comic was pretty good. Also it happened to go up on creator K. B. Spangler's birthday, so that's pretty cool too!

2. Questionable Content: 2500 Strips!

As impressive as 1000 strips is, 2500 is that much more impressive! Jeph Jacques has been making a living at it since 2004, and he also hit his ten year anniversary this week! What's great, too, is that despite having such a long and impressive history, it doesn't take much effort to jump right into the story!

1. xkcd: 3000 Frames!

Randall Munroe's latest experiment in impressive-in-their-size comics is called "Time" in which the panels have sloooooowly played out over the past several months, finally completing this past weekend. Because the speed at which the reader goes through the comic is dictated by the creator and not the reader her/himself, one could readily argue that this isn't actually a comic at all, but I doubt most people who read xkcd would bother making that distinction.