very cool, i followed the pack here this morning. i was reading my google reader when up came smashing magazine had a feed article about the best free vectors, so that's how i heard, thank you! i'm stoked because i needed a cityscape & wanted to make one for the picture i am making so now this is wonderful because i can see how you did yours and apply the same tech to buildings i need- i hope! - yours are too great!
wow,thx for the hint originally i made this for a calendar in 2008, and noow everyone can use the pack. i think it isn't that complicated to transform a photo into a silluette vector, but the results are great and useful for a lot of artworks (like the cd-cover here: [link] )