There are a lot of Vine fans at Motherboard, but Instagram video's arrival on the scene has highlighted Vine's faults: focusing is hit or miss, and sharing video through the network is next to impossible. Vine has now announced that it's fixing those issues and more, which should make the mini-video service way more useful. Competition sure is chill, right?A blog post by Vine CTO Colin Kroll highlights the new changes. Namely, the camera function has gotten better, with grid and focus tools. Another rad addition is a "ghost" tool, which displays a transparent version of your last shot frame on screen in between shots. It should prove to be helpful for making sure stop-motion video is perfectly aligned, which will make the quick cuts that make Vine so great a hell of a lot less discombobulating.Also, Vine has finally made moves to make the network easier to use. Users will now be able to "revine," which is the same thing as retweeting. Vine is also rolling out 15 categories (including separate ones for cats and dogs, natch) for sorting content, which should help users get more visibility.The updates are only for iOS right now, and will roll out fully to Android some time next week. (Revines are coming to Android sooner.) I'm pretty happy with the changes, because while Vine's inherent value is in how it forces users to produce quick, edited video (rather than just a 10 minute straight clip), it's always been difficult to actually share that video. Of course, the Android app still doesn't have an option to share old videos or ones that you find on it, nor can you download or otherwise store videos. But hey, baby steps.@derektmead